Error 500 after initialize, fresh install

AW-dev · May 18, 2021, 5:02am

On main page

HTTP Status 500 – Internal Server Error

Type Exception Report

Message Failed to execute the action with name [view]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: Failed to execute the action with name [view] com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:106) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109) org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63) org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)

Root Cause

java.lang.NullPointerException com.xpn.xwiki.web.Utils.getContextComponentManager(Utils.java:690) com.xpn.xwiki.web.Utils.getComponent(Utils.java:747) com.xpn.xwiki.web.Utils.getComponent(Utils.java:776) com.xpn.xwiki.web.Utils.getComponent(Utils.java:729) com.xpn.xwiki.web.XWikiAction.initializeContainerComponent(XWikiAction.java:821) com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:809) com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:777) com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:283) com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:104) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109) org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63) org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)

Note The full stack trace of the root cause is available in the server logs.

full log:

18-May-2021 12:27:47.879 SEVERE [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [action] in context with path [/xwiki] threw exception [Failed to execute the action with name [view]] with root cause
        java.lang.NullPointerException
                at com.xpn.xwiki.web.Utils.getContextComponentManager(Utils.java:690)
                at com.xpn.xwiki.web.Utils.getComponent(Utils.java:747)
                at com.xpn.xwiki.web.Utils.getComponent(Utils.java:776)
                at com.xpn.xwiki.web.Utils.getComponent(Utils.java:729)
                at com.xpn.xwiki.web.XWikiAction.initializeContainerComponent(XWikiAction.java:821)
                at com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:809)
                at com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:777)
                at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:283)
                at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:104)
                at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
                at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
                at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
                at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
                at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
                at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
                at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
                at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
                at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
                at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
                at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
                at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
                at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
                at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
                at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
                at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
                at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
                at java.base/java.lang.Thread.run(Thread.java:834)

tmortagne · May 18, 2021, 7:38am

This looks more like a consequence than a cause, could you check the very first error you can find in the log.

AW-dev · May 18, 2021, 8:12am

Just restarted the tomcat, no error to be found when I access the page again
This is the catalina log

18-May-2021 16:11:27.918 INFO [Thread-4] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-8080"]
18-May-2021 16:11:27.927 INFO [Thread-4] org.apache.catalina.core.StandardService.stopInternal Stopping service [Catalina]
18-May-2021 16:11:28.071 WARNING [Thread-4] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [xwiki] appears to have started a thread named [RxSchedulerPurge-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@11.0.9.1/jdk.internal.misc.Unsafe.park(Native Method)
 java.base@11.0.9.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
 java.base@11.0.9.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123)
 java.base@11.0.9.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
 java.base@11.0.9.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 java.base@11.0.9.1/java.lang.Thread.run(Thread.java:834)
18-May-2021 16:11:28.072 WARNING [Thread-4] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [xwiki] appears to have started a thread named [RxCachedWorkerPoolEvictor-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@11.0.9.1/jdk.internal.misc.Unsafe.park(Native Method)
 java.base@11.0.9.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:234)
 java.base@11.0.9.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2123)
 java.base@11.0.9.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
 java.base@11.0.9.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
 java.base@11.0.9.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 java.base@11.0.9.1/java.lang.Thread.run(Thread.java:834)
18-May-2021 16:11:28.085 INFO [Thread-4] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"]
18-May-2021 16:11:28.091 INFO [Thread-4] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"]
18-May-2021 16:11:37.211 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/9.0.31 (Ubuntu)
18-May-2021 16:11:37.212 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Oct 20 2020 12:27:39 UTC
18-May-2021 16:11:37.212 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 9.0.31.0
18-May-2021 16:11:37.212 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
18-May-2021 16:11:37.212 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            5.4.0-65-generic
18-May-2021 16:11:37.213 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
18-May-2021 16:11:37.213 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/lib/jvm/java-11-openjdk-amd64
18-May-2021 16:11:37.213 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           11.0.9.1+1-Ubuntu-0ubuntu1.20.04
18-May-2021 16:11:37.213 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Ubuntu
18-May-2021 16:11:37.213 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /var/lib/tomcat9
18-May-2021 16:11:37.214 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /usr/share/tomcat9
18-May-2021 16:11:37.230 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang=ALL-UNNAMED
18-May-2021 16:11:37.230 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.io=ALL-UNNAMED
18-May-2021 16:11:37.230 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/var/lib/tomcat9/conf/logging.properties
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.awt.headless=true
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Xmx1024m
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.security.egd=file:/dev/./urandom
18-May-2021 16:11:37.231 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
18-May-2021 16:11:37.232 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
18-May-2021 16:11:37.232 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
18-May-2021 16:11:37.232 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
18-May-2021 16:11:37.232 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/var/lib/tomcat9
18-May-2021 16:11:37.232 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/share/tomcat9
18-May-2021 16:11:37.233 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/tmp
18-May-2021 16:11:37.233 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library [1.2.23] using APR version [1.6.5].
18-May-2021 16:11:37.233 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
18-May-2021 16:11:37.233 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
18-May-2021 16:11:37.237 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 1.1.1f  31 Mar 2020]
18-May-2021 16:11:37.560 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
18-May-2021 16:11:37.593 INFO [main] org.apache.catalina.startup.Catalina.load Server initialization in [621] milliseconds
18-May-2021 16:11:37.653 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
18-May-2021 16:11:37.654 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/9.0.31 (Ubuntu)]
18-May-2021 16:11:37.661 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deploying deployment descriptor [/etc/tomcat9/Catalina/localhost/xwiki.xml]
18-May-2021 16:11:37.676 WARNING [main] org.apache.catalina.startup.HostConfig.deployDescriptor The path attribute with value [/xwiki] in deployment descriptor [/etc/tomcat9/Catalina/localhost/xwiki.xml] has been ignored

18-May-2021 16:11:48.075 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deployment of deployment descriptor [/etc/tomcat9/Catalina/localhost/xwiki.xml] has finished in [10,414] ms
18-May-2021 16:11:48.076 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/var/lib/tomcat9/webapps/ROOT]
18-May-2021 16:11:48.894 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
18-May-2021 16:11:48.904 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/var/lib/tomcat9/webapps/ROOT] has finished in [827] ms
18-May-2021 16:11:48.912 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
18-May-2021 16:11:48.953 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [11,358] milliseconds

tmortagne · May 18, 2021, 8:47am

This log seems to only contain Tomcat own log and not XWiki one. Maybe your tomcat is configured to give each application its own log file.

AW-dev · May 18, 2021, 9:18am

I just use the default settings, the error in the /var/log/tomcat9/localhost.log is posted on the first post:

/var/log/tomcat9/localhost.log

18-May-2021 16:19:27.841 SEVERE [http-nio-8080-exec-5] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [action] in context with path [/xwiki] threw exception [Failed to execute the action with name [view]] with root cause
java.lang.NullPointerException
at com.xpn.xwiki.web.Utils.getContextComponentManager(Utils.java:690)
at com.xpn.xwiki.web.Utils.getComponent(Utils.java:747)
at com.xpn.xwiki.web.Utils.getComponent(Utils.java:776)
at com.xpn.xwiki.web.Utils.getComponent(Utils.java:729)
at com.xpn.xwiki.web.XWikiAction.initializeContainerComponent(XWikiAction.java:821)
at com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:809)
at com.xpn.xwiki.web.XWikiAction.initializeXWikiContext(XWikiAction.java:777)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:283)
at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:104)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)

AW-dev · May 18, 2021, 9:23am

I dont know if its relevant, but because my mysql is already exists I only maunally created the database as follow, It havent created any tables yet

mysql -u root -e “create database xwiki default character set utf8mb4 collate utf8mb4_bin”

mysql -u root -e “CREATE USER ‘xwiki’@‘localhost’ IDENTIFIED BY ‘xwiki’”;

mysql -u root -e “grant all privileges on . to xwiki@localhost”

tmortagne · May 18, 2021, 10:43am

XWiki is automatically creating the tables.

jaczek · November 1, 2021, 1:32pm

I experienced the same error:
java.lang.NullPointerException com.xpn.xwiki.web.Utils.getContextComponentManager(Utils.java:690)

In log I could find: java.nio.file.AccessDeniedException: /var/lib/xwiki/data/store.
In my case permanentDirectory was missing permission: execute/search.
After adding this permission it was working OK.

jaczek · November 2, 2021, 11:11am

I experienced it also for the second time - it was caused by my manual stopping and starting xwiki in tomcat.
I had to restart tomcat to make it work…

jaczek · November 4, 2021, 10:26am

the same for hot deploy…