Hi,

I´ve just installed 9.1 with the following configuration: 

- OS: Ubuntu 22.04.4 LTS (Jammy) (Released 2024-02-22) (Latest 24.04)
- Apache 2.4 (Version 2.4.52 Released 2021-12-20) (Latest xxx)
- JAVA 17 (OpenJDK) (Version 17.0.15 Released 2025-04-15) (Latest 24.0.2)
- Maven 3.8+ (Version 3.9.11 Released 2025-07-15) (Latest 3.9.11)
- Ant 1.8+ (Version 1.10.12 Released 2021-10-19) (Latest 1.10.15)
- Git 2.10+ (Version 2.41.0 Released 2023-06-01) (Latest 2.50.1)
- Tomcat 10+ (Version 11.0.9 Released 2025-07-01) (Latest 11.0.9)
- Solr 9+ (Version 9.9.0 Released 2025-07-24) (Latest 9.9.0)
- PostgreSQL 14+ (Version 17.5 Released 2025-05-08) (Latest 17.5)

The initial build went on fine but the server is not starting.  SOLR is not 
loading the cores.  The errror is 

2025-08-04 15:40:17.599 ERROR (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.c.CoreContainer SolrCore failed to load on startup => 
org.apache.solr.common.SolrException: Unable to create core [qaevent]
at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
org.apache.solr.common.SolrException: Unable to create core [qaevent]
at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
 
~[?:?]
at 
org.apache.solr.core.CoreContainer.lambda$loadInternal$12(CoreContainer.java:1096)
 
~[?:?]
at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212)
 
~[metrics-core-4.2.26.jar:4.2.26]
at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:381)
 
~[?:?]
at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
 
~[?:?]
at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 
~[?:?]
at java.base/java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for 
core qaevent: Can't load schema /opt/solr/data/qaevent/conf/schema.xml: 
Plugin init failure for [schema.xml] fieldType "text": Plugin init failure 
for [schema.xml] analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'

The same for the other five cores.

Full solr.log attached.

Any help will be appreciated

Regards

Federico

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2025-08-04 15:40:13.681 INFO  (main) [c: s: r: x: t:] o.e.j.s.Server 
jetty-10.0.22; built: 2024-06-27T16:03:51.502Z; git: 
5c8471e852d377fd726ad9b1692c35ffc5febb09; jvm 17.0.15+6-Ubuntu-0ubuntu122.04
2025-08-04 15:40:14.270 WARN  (main) [c: s: r: x: t:] 
o.e.j.u.DeprecationWarning Using @Deprecated Class 
org.eclipse.jetty.servlet.listener.ELContextCleaner
2025-08-04 15:40:14.327 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider Using logger factory 
org.apache.logging.slf4j.Log4jLoggerFactory
2025-08-04 15:40:14.347 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider  ___      _       Welcome to Apache Solr™ version 
9.9.0
2025-08-04 15:40:14.348 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider / __| ___| |_ _   Starting in standalone mode on 
port 8983
2025-08-04 15:40:14.349 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider \__ \/ _ \ | '_|  Install dir: /opt/solr-9.9.0
2025-08-04 15:40:14.350 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider |___/\___/_|_|    Start time: 
2025-08-04T15:40:14.350396826Z
2025-08-04 15:40:14.357 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider Solr started with "-XX:+CrashOnOutOfMemoryError" 
that will crash on any OutOfMemoryError exception. The cause of the OOME will 
be logged in the crash file at the following path: 
/opt/solr/logs/jvm_crash_178206.log
2025-08-04 15:40:14.417 INFO  (main) [c: s: r: x: t:] 
o.a.s.s.CoreContainerProvider Solr Home: /opt/solr/data (source: system 
property: solr.solr.home)
2025-08-04 15:40:14.447 INFO  (main) [c: s: r: x: t:] o.a.s.c.SolrXmlConfig 
solr.xml not found in SOLR_HOME, using built-in default
2025-08-04 15:40:14.449 INFO  (main) [c: s: r: x: t:] o.a.s.c.SolrXmlConfig 
Loading solr.xml from /opt/solr-9.9.0/server/solr/solr.xml
2025-08-04 15:40:14.542 INFO  (main) [c: s: r: x: t:] 
o.a.s.c.SolrResourceLoader Added 1 libs to classloader, from paths: 
[/opt/solr-9.9.0/lib]
2025-08-04 15:40:16.261 INFO  (main) [c: s: r: x: t:] 
o.a.s.u.t.SimplePropagator Always-on trace id generation enabled.
2025-08-04 15:40:16.837 WARN  (main) [c: s: r: x: t:] 
o.a.s.u.StartupLoggingUtils Jetty request logging enabled. Will retain logs for 
last 3 days. See chapter "Configuring Logging" in reference guide for how to 
configure.
2025-08-04 15:40:16.844 WARN  (main) [c: s: r: x: t:] o.a.s.c.CoreContainer Not 
all security plugins configured!  authentication=disabled 
authorization=disabled.  Solr is only as secure as you make it. Consider 
configuring authentication/authorization before exposing Solr to users internal 
or external.  See https://s.apache.org/solrsecurity for more info
2025-08-04 15:40:17.241 INFO  (main) [c: s: r: x: t:] 
o.a.s.c.CorePropertiesLocator Found 6 core definitions underneath /opt/solr/data
2025-08-04 15:40:17.242 INFO  (main) [c: s: r: x: t:] 
o.a.s.c.CorePropertiesLocator Cores are: [authority, oai, qaevent, search, 
statistics, suggestion]
2025-08-04 15:40:17.312 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.c.SolrConfig Configset references one or more <lib/> 
directives, but <lib/> usage is disabled on this Solr node.  Either remove all 
<lib/> tags from the relevant configset, or enable use of this feature by 
setting 'solr.config.lib.enabled=true'
2025-08-04 15:40:17.311 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:17.309 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:17.313 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:17.364 WARN  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in 
config; use sys-prop
2025-08-04 15:40:17.364 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in 
config; use sys-prop
2025-08-04 15:40:17.370 WARN  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in config; use 
sys-prop
2025-08-04 15:40:17.370 WARN  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.D.handleSelect handleSelect is deprecated
2025-08-04 15:40:17.470 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.s.IndexSchema Schema name=authority
2025-08-04 15:40:17.483 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.s.IndexSchema Schema name=qaevent
2025-08-04 15:40:17.487 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.s.IndexSchema Schema name=xoai
2025-08-04 15:40:17.555 WARN  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.D.s.SynonymFilterFactory Solr loaded a deprecated 
plugin/analysis class [solr.SynonymFilterFactory]. Please consult documentation 
how to replace it accordingly.
2025-08-04 15:40:17.556 WARN  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.D.s.WordDelimiterFilterFactory Solr loaded a deprecated 
plugin/analysis class [solr.WordDelimiterFilterFactory]. Please consult 
documentation how to replace it accordingly.
2025-08-04 15:40:17.599 ERROR (coreLoadExecutor-13-thread-3) [c: s: r: 
x:qaevent t:] o.a.s.c.CoreContainer SolrCore failed to load on startup => 
org.apache.solr.common.SolrException: Unable to create core [qaevent]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
org.apache.solr.common.SolrException: Unable to create core [qaevent]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
 ~[?:?]
        at 
org.apache.solr.core.CoreContainer.lambda$loadInternal$12(CoreContainer.java:1096)
 ~[?:?]
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212)
 ~[metrics-core-4.2.26.jar:4.2.26]
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:381)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 ~[?:?]
        at java.base/java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for core 
qaevent: Can't load schema /opt/solr/data/qaevent/conf/schema.xml: Plugin init 
failure for [schema.xml] fieldType "text": Plugin init failure for [schema.xml] 
analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:291) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Can't load schema 
/opt/solr/data/qaevent/conf/schema.xml: Plugin init failure for [schema.xml] 
fieldType "text": Plugin init failure for [schema.xml] analyzer/filter:  Error 
loading class 'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:662) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] fieldType "text": Plugin init failure for [schema.xml] 
analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:554) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.lucene.analysis.icu.ICUFoldingFilterFactory
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592) 
~[?:?]
        at 
java.base/java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:872) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) 
~[?:?]
        at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
        at java.base/java.lang.Class.forName(Class.java:467) ~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:538) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
2025-08-04 15:40:17.633 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: x:search 
t:] o.a.s.c.SolrConfig Configset references one or more <lib/> directives, but 
<lib/> usage is disabled on this Solr node.  Either remove all <lib/> tags from 
the relevant configset, or enable use of this feature by setting 
'solr.config.lib.enabled=true'
2025-08-04 15:40:17.634 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: x:search 
t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:17.637 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: x:search 
t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in config; use 
sys-prop
2025-08-04 15:40:17.675 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: x:search 
t:] o.a.s.s.IndexSchema Schema name=discovery
2025-08-04 15:40:17.701 ERROR (coreLoadExecutor-13-thread-3) [c: s: r: x:search 
t:] o.a.s.c.CoreContainer SolrCore failed to load on startup => 
org.apache.solr.common.SolrException: Unable to create core [search]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
org.apache.solr.common.SolrException: Unable to create core [search]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
 ~[?:?]
        at 
org.apache.solr.core.CoreContainer.lambda$loadInternal$12(CoreContainer.java:1096)
 ~[?:?]
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212)
 ~[metrics-core-4.2.26.jar:4.2.26]
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:381)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 ~[?:?]
        at java.base/java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for core 
search: Can't load schema /opt/solr/data/search/conf/schema.xml: Plugin init 
failure for [schema.xml] fieldType "text": Plugin init failure for [schema.xml] 
analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:291) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Can't load schema 
/opt/solr/data/search/conf/schema.xml: Plugin init failure for [schema.xml] 
fieldType "text": Plugin init failure for [schema.xml] analyzer/filter:  Error 
loading class 'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:662) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] fieldType "text": Plugin init failure for [schema.xml] 
analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:554) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.lucene.analysis.icu.ICUFoldingFilterFactory
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592) 
~[?:?]
        at 
java.base/java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:872) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) 
~[?:?]
        at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
        at java.base/java.lang.Class.forName(Class.java:467) ~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:538) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
2025-08-04 15:40:17.721 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:17.725 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in 
config; use sys-prop
2025-08-04 15:40:17.745 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.s.IndexSchema Schema name=statistics
2025-08-04 15:40:17.788 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.s.IndexSchema Loaded schema authority/1.1 with uniqueid 
field id
2025-08-04 15:40:17.789 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.s.IndexSchema Loaded schema statistics/1.1 with uniqueid 
field uid
2025-08-04 15:40:17.801 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.s.IndexSchema Loaded schema xoai/1.2 with uniqueid field item.handle
2025-08-04 15:40:17.808 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.c.CoreContainer Creating SolrCore 'authority' using 
configuration from instancedir /opt/solr/data/authority, trusted=true
2025-08-04 15:40:17.812 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.c.CoreContainer Creating SolrCore 'statistics' using 
configuration from instancedir /opt/solr/data/statistics, trusted=true
2025-08-04 15:40:17.845 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.c.CoreContainer Creating SolrCore 'oai' using configuration from 
instancedir /opt/solr/data/oai, trusted=true
2025-08-04 15:40:17.949 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.c.SolrCore Opening new SolrCore at 
[/opt/solr/data/statistics], dataDir=[/opt/solr/data/statistics/data/]
2025-08-04 15:40:17.951 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.c.SolrCore Opening new SolrCore at 
[/opt/solr/data/authority], dataDir=[/opt/solr/data/authority/data/]
2025-08-04 15:40:17.954 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.c.SolrCore Opening new SolrCore at [/opt/solr/data/oai], 
dataDir=[/opt/solr/data/oai/data/]
2025-08-04 15:40:18.145 WARN  (main) [c: s: r: x: t:] 
o.g.j.m.i.MessagingBinders A class jakarta.activation.DataSource for a default 
provider MessageBodyWriter<jakarta.activation.DataSource> was not found. The 
provider is not available.
2025-08-04 15:40:19.308 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.j.SolrRequestAuthorizer Creating a new 
SolrRequestAuthorizer
2025-08-04 15:40:19.309 INFO  (main) [c: s: r: x: t:] 
o.a.s.j.SolrRequestAuthorizer Creating a new SolrRequestAuthorizer
2025-08-04 15:40:19.311 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.j.SolrRequestAuthorizer Creating a new 
SolrRequestAuthorizer
2025-08-04 15:40:19.312 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.j.SolrRequestAuthorizer Creating a new SolrRequestAuthorizer
2025-08-04 15:40:19.484 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.u.CommitTracker Hard AutoCommit: if uncommitted for 
10000ms; if 10000 uncommitted docs; 
2025-08-04 15:40:19.485 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.u.CommitTracker Soft AutoCommit: disabled
2025-08-04 15:40:19.485 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.u.CommitTracker Hard AutoCommit: if uncommitted for 10000ms; if 10000 
uncommitted docs; 
2025-08-04 15:40:19.485 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.u.CommitTracker Soft AutoCommit: disabled
2025-08-04 15:40:19.484 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.u.CommitTracker Hard AutoCommit: if uncommitted for 
10000ms; if 10000 uncommitted docs; 
2025-08-04 15:40:19.489 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.u.CommitTracker Soft AutoCommit: disabled
2025-08-04 15:40:19.729 INFO  (main) [c: s: r: x: t:] o.e.j.s.h.ContextHandler 
Started 
o.e.j.w.WebAppContext@733c423e{solr-jetty-context.xml,/solr,file:///opt/solr-9.9.0/server/solr-webapp/webapp/,AVAILABLE}{/opt/solr-9.9.0/server/solr-webapp/webapp}
2025-08-04 15:40:19.731 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.r.ManagedResourceStorage File-based storage initialized 
to use dir: /opt/solr/data/authority/conf
2025-08-04 15:40:19.732 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.r.ManagedResourceStorage File-based storage initialized to use dir: 
/opt/solr/data/oai/conf
2025-08-04 15:40:19.733 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.r.ManagedResourceStorage File-based storage initialized 
to use dir: /opt/solr/data/statistics/conf
2025-08-04 15:40:19.748 INFO  (main) [c: s: r: x: t:] o.e.j.s.RequestLogWriter 
Opened /opt/solr-9.9.0/logs/2025_08_04.request.log
2025-08-04 15:40:19.761 INFO  (coreLoadExecutor-13-thread-1) [c: s: r: 
x:authority t:] o.a.s.h.ReplicationHandler Commits will be reserved for 10000 ms
2025-08-04 15:40:19.762 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:statistics t:] o.a.s.h.ReplicationHandler Commits will be reserved for 10000 
ms
2025-08-04 15:40:19.762 INFO  (coreLoadExecutor-13-thread-2) [c: s: r: x:oai 
t:] o.a.s.h.ReplicationHandler Commits will be reserved for 10000 ms
2025-08-04 15:40:19.766 INFO  (main) [c: s: r: x: t:] o.e.j.s.AbstractConnector 
Started ServerConnector@30d4b288{HTTP/1.1, (http/1.1, h2c)}{127.0.0.1:8983}
2025-08-04 15:40:19.776 INFO  (main) [c: s: r: x: t:] o.e.j.s.Server Started 
Server@42a9e5d1{STARTING}[10.0.22,sto=0] @8642ms
2025-08-04 15:40:19.778 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:suggestion t:] o.a.s.c.SolrConfig Configset references one or more <lib/> 
directives, but <lib/> usage is disabled on this Solr node.  Either remove all 
<lib/> tags from the relevant configset, or enable use of this feature by 
setting 'solr.config.lib.enabled=true'
2025-08-04 15:40:19.778 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:suggestion t:] o.a.s.c.SolrConfig Using Lucene MatchVersion: 8.8.1
2025-08-04 15:40:19.785 WARN  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:suggestion t:] o.a.s.c.SolrConfig Ignored deprecated enableRemoteStreaming in 
config; use sys-prop
2025-08-04 15:40:19.797 INFO  (searcherExecutor-19-thread-1-processing-oai) [c: 
s: r: x:oai t:] o.a.s.c.SolrCore Registered new searcher autowarm time: 0 ms
2025-08-04 15:40:19.798 INFO  
(searcherExecutor-16-thread-1-processing-statistics) [c: s: r: x:statistics t:] 
o.a.s.c.SolrCore Registered new searcher autowarm time: 0 ms
2025-08-04 15:40:19.804 INFO  (coreLoadExecutor-13-thread-3) [c: s: r: 
x:suggestion t:] o.a.s.s.IndexSchema Schema name=suggestion
2025-08-04 15:40:19.805 INFO  
(searcherExecutor-17-thread-1-processing-authority) [c: s: r: x:authority t:] 
o.a.s.c.SolrCore Registered new searcher autowarm time: 0 ms
2025-08-04 15:40:19.820 ERROR (coreLoadExecutor-13-thread-3) [c: s: r: 
x:suggestion t:] o.a.s.c.CoreContainer SolrCore failed to load on startup => 
org.apache.solr.common.SolrException: Unable to create core [suggestion]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
org.apache.solr.common.SolrException: Unable to create core [suggestion]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
 ~[?:?]
        at 
org.apache.solr.core.CoreContainer.lambda$loadInternal$12(CoreContainer.java:1096)
 ~[?:?]
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212)
 ~[metrics-core-4.2.26.jar:4.2.26]
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:381)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
 ~[?:?]
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 ~[?:?]
        at java.base/java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for core 
suggestion: Can't load schema /opt/solr/data/suggestion/conf/schema.xml: Plugin 
init failure for [schema.xml] fieldType "text": Plugin init failure for 
[schema.xml] analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:291) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Can't load schema 
/opt/solr/data/suggestion/conf/schema.xml: Plugin init failure for [schema.xml] 
fieldType "text": Plugin init failure for [schema.xml] analyzer/filter:  Error 
loading class 'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:662) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] fieldType "text": Plugin init failure for [schema.xml] 
analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] analyzer/filter:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:178)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: org.apache.solr.common.SolrException:  Error loading class 
'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:554) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.lucene.analysis.icu.ICUFoldingFilterFactory
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592) 
~[?:?]
        at 
java.base/java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:872) 
~[?:?]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) 
~[?:?]
        at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
        at java.base/java.lang.Class.forName(Class.java:467) ~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:538) 
~[?:?]
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:616)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:402)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:377)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:431)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:78)
 ~[?:?]
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
 ~[?:?]
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:143)
 ~[?:?]
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:537) 
~[?:?]
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:192) 
~[?:?]
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:109) 
~[?:?]
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:370)
 ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:281)
 ~[?:?]
        at org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49) ~[?:?]
        at 
org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:277) 
~[?:?]
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1753)
 ~[?:?]
        ... 6 more

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