I'm being forced to use CentOS 7 on a server, and I'm trying to install an older version of Ciphermail (4.11.0-0).
I follow all the steps for the related version to install. When I start Tomcat, catalina throws the following error: Nov 15, 2021 9:50:20 AM org.apache.catalina.startup.HostConfig deployDescriptors SEVERE: Error waiting for multi-thread deployment of context descriptors to complete java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:597) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1757) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:333) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1370) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1542) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1552) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1520) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:696) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1966) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ... 1 more I've been digging online to try and solve this issue - and it could be related to some sort of JAR file issue inside the application - see here https://bz.apache.org/bugzilla/show_bug.cgi?id=53871#c16 Any ideas on what i can do to resolve this would be greatly appreciated. OS: NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https://www.centos.org/"; BUG_REPORT_URL="https://bugs.centos.org/"; CENTOS_MANTISBT_PROJECT="CentOS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7" Kernel: 3.10.0-1160.31.1.el7.x86_64
