Hi DSpace Colleagues,

I am getting the following build error, please assist, I have also attached 
doc indicating failure 

-bash-4.2$ mvn -e clean package
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] 
------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] DSpace Parent Project                                              
[pom]
[INFO] DSpace Services Framework :: API and Implementation                
[jar]
[INFO] DSpace Kernel :: API and Implementation                            
[jar]
[INFO] DSpace Addon Modules                                              
 [pom]
[INFO] DSpace Kernel :: Additions and Local Customizations                
[jar]
[INFO] DSpace OAI-PMH                                                    
 [jar]
[INFO] DSpace RDF                                                        
 [jar]
[INFO] DSpace SWORD                                                      
 [jar]
[INFO] DSpace SWORD v2                                                    
[jar]
[INFO] DSpace Server Webapp                                              
 [war]
[INFO] DSpace Server Webapp:: Local Customizations                        
[war]
[INFO] DSpace Assembly and Configuration                                  
[pom]
[INFO]
[INFO] ----------------------< org.dspace:dspace-parent 
>----------------------
[INFO] Building DSpace Parent Project 7.0                                
[1/12]
[INFO] --------------------------------[ pom 
]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ dspace-parent 
---
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/target
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/dspace/modules (includes = 
[**/target], excludes = [])
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-java) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-versions) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (ban-dependencies) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-assembly-plugin:3.2.0:single (default) @ dspace-parent ---
[INFO] Reading assembly descriptor: src/main/assembly/testEnvironment.xml
[INFO] Processing sources for module project: 
org.dspace:dspace-services:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-api:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-oai:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-rdf:jar:7.0
[INFO] Processing sources for module project: 
org.dspace:dspace-sword:jar:7.0
[INFO] Processing sources for module project: 
org.dspace:dspace-swordv2:jar:7.0
[INFO] Processing sources for module project: 
org.dspace:dspace-server-webapp:war:7.0
[INFO] Processing sources for module project: org.dspace:dspace:pom:7.0
[INFO] Processing sources for module project: org.dspace:modules:pom:7.0
[INFO] Processing sources for module project: org.dspace:dspace:pom:7.0
[INFO] Building zip: 
/dspace/Source/DSpace-dspace-7.0/target/dspace-parent-7.0-testEnvironment.zip
[INFO]
[INFO] --- xml-maven-plugin:1.0.2:validate (validate-ALL-xml-and-xsl) @ 
dspace-parent ---
[INFO]
[INFO] ---------------------< org.dspace:dspace-services 
>---------------------
[INFO] Building DSpace Services Framework :: API and Implementation 7.0  
[2/12]
[INFO] --------------------------------[ jar 
]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ dspace-services 
---
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/dspace-services/target
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-java) @ 
dspace-services ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-versions) @ 
dspace-services ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (ban-dependencies) @ 
dspace-services ---
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ 
dspace-services ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ 
dspace-services ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 80 source files to 
/dspace/Source/DSpace-dspace-7.0/dspace-services/target/classes
[INFO] 
------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] DSpace Parent Project 7.0 .......................... SUCCESS [  
3.861 s]
[INFO] DSpace Services Framework :: API and Implementation  FAILURE [  
2.803 s]
[INFO] DSpace Kernel :: API and Implementation ............ SKIPPED
[INFO] DSpace Addon Modules ............................... SKIPPED
[INFO] DSpace Kernel :: Additions and Local Customizations  SKIPPED
[INFO] DSpace OAI-PMH ..................................... SKIPPED
[INFO] DSpace RDF ......................................... SKIPPED
[INFO] DSpace SWORD ....................................... SKIPPED
[INFO] DSpace SWORD v2 .................................... SKIPPED
[INFO] DSpace Server Webapp ............................... SKIPPED
[INFO] DSpace Server Webapp:: Local Customizations ........ SKIPPED
[INFO] DSpace Assembly and Configuration 7.0 .............. SKIPPED
[INFO] 
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] 
------------------------------------------------------------------------
[INFO] Total time: 7.029 s
[INFO] Finished at: 2021-09-17T12:53:32+02:00
[INFO] 
------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile 
(default-compile) on project dspace-services: Fatal error compiling: error: 
release version 11 not supported -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile 
(default-compile) on project dspace-services: Fatal error compiling
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Fatal error 
compiling
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1145)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: org.codehaus.plexus.compiler.CompilerException: error: release 
version 11 not supported
    at 
org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess 
(JavaxToolsCompiler.java:173)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile 
(JavacCompiler.java:174)
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1134)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: java.lang.IllegalArgumentException: error: release version 11 
not supported
    at com.sun.tools.javac.main.Arguments.reportDiag (Arguments.java:891)
    at com.sun.tools.javac.main.Arguments.handleReleaseOptions 
(Arguments.java:311)
    at com.sun.tools.javac.main.Arguments.processArgs (Arguments.java:350)
    at com.sun.tools.javac.main.Arguments.init (Arguments.java:246)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:185)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:119)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:68)
    at 
org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess 
(JavaxToolsCompiler.java:125)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile 
(JavacCompiler.java:174)
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1134)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, 
please read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the 
command
[ERROR]   mvn <goals> -rf :dspace-services
-bash-4.2$

Regards,
Lewatle 

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-bash-4.2$ mvn -e clean package
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] DSpace Parent Project                                              [pom]
[INFO] DSpace Services Framework :: API and Implementation                [jar]
[INFO] DSpace Kernel :: API and Implementation                            [jar]
[INFO] DSpace Addon Modules                                               [pom]
[INFO] DSpace Kernel :: Additions and Local Customizations                [jar]
[INFO] DSpace OAI-PMH                                                     [jar]
[INFO] DSpace RDF                                                         [jar]
[INFO] DSpace SWORD                                                       [jar]
[INFO] DSpace SWORD v2                                                    [jar]
[INFO] DSpace Server Webapp                                               [war]
[INFO] DSpace Server Webapp:: Local Customizations                        [war]
[INFO] DSpace Assembly and Configuration                                  [pom]
[INFO]
[INFO] ----------------------< org.dspace:dspace-parent >----------------------
[INFO] Building DSpace Parent Project 7.0                                [1/12]
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ dspace-parent ---
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/target
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/dspace/modules (includes = 
[**/target], excludes = [])
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-java) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-versions) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (ban-dependencies) @ 
dspace-parent ---
[INFO]
[INFO] --- maven-assembly-plugin:3.2.0:single (default) @ dspace-parent ---
[INFO] Reading assembly descriptor: src/main/assembly/testEnvironment.xml
[INFO] Processing sources for module project: org.dspace:dspace-services:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-api:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-oai:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-rdf:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-sword:jar:7.0
[INFO] Processing sources for module project: org.dspace:dspace-swordv2:jar:7.0
[INFO] Processing sources for module project: 
org.dspace:dspace-server-webapp:war:7.0
[INFO] Processing sources for module project: org.dspace:dspace:pom:7.0
[INFO] Processing sources for module project: org.dspace:modules:pom:7.0
[INFO] Processing sources for module project: org.dspace:dspace:pom:7.0
[INFO] Building zip: 
/dspace/Source/DSpace-dspace-7.0/target/dspace-parent-7.0-testEnvironment.zip
[INFO]
[INFO] --- xml-maven-plugin:1.0.2:validate (validate-ALL-xml-and-xsl) @ 
dspace-parent ---
[INFO]
[INFO] ---------------------< org.dspace:dspace-services >---------------------
[INFO] Building DSpace Services Framework :: API and Implementation 7.0  [2/12]
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ dspace-services ---
[INFO] Deleting /dspace/Source/DSpace-dspace-7.0/dspace-services/target
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-java) @ 
dspace-services ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (enforce-versions) @ 
dspace-services ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M3:enforce (ban-dependencies) @ 
dspace-services ---
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ 
dspace-services ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ 
dspace-services ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 80 source files to 
/dspace/Source/DSpace-dspace-7.0/dspace-services/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] DSpace Parent Project 7.0 .......................... SUCCESS [  3.861 s]
[INFO] DSpace Services Framework :: API and Implementation  FAILURE [  2.803 s]
[INFO] DSpace Kernel :: API and Implementation ............ SKIPPED
[INFO] DSpace Addon Modules ............................... SKIPPED
[INFO] DSpace Kernel :: Additions and Local Customizations  SKIPPED
[INFO] DSpace OAI-PMH ..................................... SKIPPED
[INFO] DSpace RDF ......................................... SKIPPED
[INFO] DSpace SWORD ....................................... SKIPPED
[INFO] DSpace SWORD v2 .................................... SKIPPED
[INFO] DSpace Server Webapp ............................... SKIPPED
[INFO] DSpace Server Webapp:: Local Customizations ........ SKIPPED
[INFO] DSpace Assembly and Configuration 7.0 .............. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.029 s
[INFO] Finished at: 2021-09-17T12:53:32+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) 
on project dspace-services: Fatal error compiling: error: release version 11 
not supported -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal 
org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) 
on project dspace-services: Fatal error compiling
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Fatal error compiling
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1145)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: org.codehaus.plexus.compiler.CompilerException: error: release 
version 11 not supported
    at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess 
(JavaxToolsCompiler.java:173)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile 
(JavacCompiler.java:174)
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1134)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
Caused by: java.lang.IllegalArgumentException: error: release version 11 not 
supported
    at com.sun.tools.javac.main.Arguments.reportDiag (Arguments.java:891)
    at com.sun.tools.javac.main.Arguments.handleReleaseOptions 
(Arguments.java:311)
    at com.sun.tools.javac.main.Arguments.processArgs (Arguments.java:350)
    at com.sun.tools.javac.main.Arguments.init (Arguments.java:246)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:185)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:119)
    at com.sun.tools.javac.api.JavacTool.getTask (JavacTool.java:68)
    at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess 
(JavaxToolsCompiler.java:125)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile 
(JavacCompiler.java:174)
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute 
(AbstractCompilerMojo.java:1134)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute 
(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:954)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :dspace-services
-bash-4.2$

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