Error following Universal Plugin Manager update

Following update of Universal Plugin Manager I get a 500 server error. Can you help?

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Technical details

Log's referral number: 4c91077e-decb-4b29-9f59-199dbe4ef05d

Cause

Referer URL: Unknown

java.lang.RuntimeException: org.apache.jasper.JasperException: com.atlassian.cache.CacheException: java.lang.NullPointerException: com.atlassian.cache.memory.MemoryCacheManager$1$1@549b1cb1 returned null for key com.atlassian.cache.impl.ReferenceKey@0.
java.lang.RuntimeException: org.apache.jasper.JasperException: com.atlassian.cache.CacheException: java.lang.NullPointerException: com.atlassian.cache.memory.MemoryCacheManager$1$1@549b1cb1 returned null for key com.atlassian.cache.impl.ReferenceKey@0.
	at com.opensymphony.sitemesh.webapp.decorator.BaseWebAppDecorator.render(BaseWebAppDecorator.java:37)
	at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:92)
	at com.atlassian.jira.web.filters.SitemeshPageFilter.doFilter(SitemeshPageFilter.java:124)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:87)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.jira.mobile.servlet.filter.MobileRedirectFilter.doFilter(MobileRedirectFilter.java:59)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.jira.mobile.servlet.filter.DesktopSwitchFilter.doFilter(DesktopSwitchFilter.java:46)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.jira.mobile.servlet.filter.MobileAuthenticationFilter.doFilter(MobileAuthenticationFilter.java:92)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:234)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:100)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:169)
	at com.atlassian.jira.web.filters.JiraLoginFilter.doFilter(JiraLoginFilter.java:70)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter.doFilter(OAuthFilter.java:61)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.bonfire.web.filters.BonfireP3PFilter.doFilter(BonfireP3PFilter.java:57)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:99)
	at com.atlassian.jira.web.filters.JIRAProfilingFilter.doFilter(JIRAProfilingFilter.java:19)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.gzipfilter.GzipFilter.doFilterInternal(GzipFilter.java:74)
	at com.atlassian.gzipfilter.GzipFilter.doFilter(GzipFilter.java:51)
	at com.atlassian.jira.web.filters.gzip.JiraGzipFilter.doFilter(JiraGzipFilter.java:55)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.analytics.client.filter.AnalyticsFilter.doFilter(AnalyticsFilter.java:27)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:87)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:33)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.core.filters.encoding.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:41)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at com.atlassian.jira.web.filters.PathMatchingEncodingFilter.doFilter(PathMatchingEncodingFilter.java:49)
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.jira.startup.JiraStartupChecklistFilter.doFilter(JiraStartupChecklistFilter.java:78)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.jira.web.filters.MultipartBoundaryCheckFilter.doFilter(MultipartBoundaryCheckFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:87)
	at com.atlassian.jira.web.filters.JiraFirstFilter.doFilter(JiraFirstFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: com.atlassian.cache.CacheException: java.lang.NullPointerException: com.atlassian.cache.memory.MemoryCacheManager$1$1@549b1cb1 returned null for key com.atlassian.cache.impl.ReferenceKey@0.
	at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
	at com.opensymphony.sitemesh.compatability.OldDecorator2NewDecorator.render(OldDecorator2NewDecorator.java:46)
	at com.opensymphony.sitemesh.webapp.decorator.BaseWebAppDecorator.render(BaseWebAppDecorator.java:33)
	... 124 more
Caused by: com.atlassian.cache.CacheException: java.lang.NullPointerException: com.atlassian.cache.memory.MemoryCacheManager$1$1@549b1cb1 returned null for key com.atlassian.cache.impl.ReferenceKey@0.
	at com.atlassian.cache.memory.DelegatingCachedReference.get(DelegatingCachedReference.java:47)
	at com.pyxis.greenhopper.jira.license.GreenHopperLicenseStoreImpl.retrieve(GreenHopperLicenseStoreImpl.java:35)
	at com.pyxis.greenhopper.jira.license.GreenHopperPluginLicenseManager.getCurrentLicense(GreenHopperPluginLicenseManager.java:102)
	at com.pyxis.greenhopper.jira.license.GreenHopperLicenseManagerImpl.doVerify(GreenHopperLicenseManagerImpl.java:131)
	at com.pyxis.greenhopper.jira.license.GreenHopperLicenseManagerImpl.verify(GreenHopperLicenseManagerImpl.java:121)
	at com.atlassian.greenhopper.conditions.GreenHopperLicenseCheckerImpl.isGreenHopperPresentAndLicensed(GreenHopperLicenseCheckerImpl.java:20)
	at com.atlassian.greenhopper.conditions.IsGreenHopperLicensedCondition$2.apply(IsGreenHopperLicensedCondition.java:41)
	at com.atlassian.greenhopper.conditions.IsGreenHopperLicensedCondition$2.apply(IsGreenHopperLicensedCondition.java:37)
	at com.atlassian.fugue.Option$Some.fold(Option.java:377)
	at com.atlassian.greenhopper.conditions.IsGreenHopperLicensedCondition.shouldDisplay(IsGreenHopperLicensedCondition.java:27)
	at com.atlassian.plugin.webresource.condition.DecoratingLegacyCondition.shouldDisplayImmediate(DecoratingLegacyCondition.java:45)
	at com.atlassian.plugin.webresource.condition.DecoratingAndCompositeCondition.shouldDisplayImmediate(DecoratingAndCompositeCondition.java:37)
	at com.atlassian.plugin.webresource.condition.DecoratingAndCompositeCondition.shouldDisplayImmediate(DecoratingAndCompositeCondition.java:37)
	at com.atlassian.plugin.webresource.WebResourceModuleDescriptor.shouldDisplayImmediate(WebResourceModuleDescriptor.java:228)
	at com.atlassian.plugin.webresource.DefaultResourceDependencyResolver.resolveDependencies(DefaultResourceDependencyResolver.java:143)
	at com.atlassian.plugin.webresource.DefaultResourceDependencyResolver.getDependencies(DefaultResourceDependencyResolver.java:53)
	at com.atlassian.plugin.webresource.assembler.DefaultWebResourceAssembler$ResourceRequirer.getAllModuleKeysDependencies(DefaultWebResourceAssembler.java:344)
	at com.atlassian.plugin.webresource.assembler.DefaultWebResourceAssembler$ResourceRequirer.includeResources(DefaultWebResourceAssembler.java:271)
	at com.atlassian.plugin.webresource.assembler.DefaultWebResourceAssembler$ResourceRequirer.access$1200(DefaultWebResourceAssembler.java:227)
	at com.atlassian.plugin.webresource.assembler.DefaultWebResourceAssembler$DefaultAssembledResources.drainIncludedResources(DefaultWebResourceAssembler.java:208)
	at com.atlassian.jira.plugin.navigation.HeaderFooterRendering.includeHeadResources(HeaderFooterRendering.java:82)
	at org.apache.jsp.decorators.general_jsp._jspService(general_jsp.java:231)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	... 154 more
Caused by: java.lang.NullPointerException: com.atlassian.cache.memory.MemoryCacheManager$1$1@549b1cb1 returned null for key com.atlassian.cache.impl.ReferenceKey@0.
	at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:401)
	at com.atlassian.cache.memory.DelegatingCachedReference.get(DelegatingCachedReference.java:39)
	... 178 more

3 answers

1 accepted

We have resolved this issue by replacing the Universal Plugin Manager jar file manually with the file from the orignal installation which, oddly, appears to be the same version. Now all working fine. Can only assume the file was corrupted.

This is an important point! In https://jira.atlassian.com/browse/GHS-10844 it mentions a possible workaround of upgrading UPM. For one of our customers this didn't work, they had to **re-install the same version** of UPM from the original installation.

0 vote
Chris Fuller Atlassian Team Jun 23, 2014

This exception indicates that the version of UPM has a bug in it. Specifically, it has used a cache loader that returned a null value, which is not permitted. Either the null value is itself a problem or UPM should have wrapped it in a CacheObject, Optional, or similar container structure to prevent the explicit return of a null value directly.

You haven't said what version of UPM this is and whether the error happens everywhere or just on the Manage Add-Ons page, etc. or whether or not you instance is completely down. If your system is down, then you should probably open a support ticket, as they will be better able to walk you through your options.

Chris Fuller Atlassian Team Jun 23, 2014

Correction:

Looking more closely at the stack trace, this is a bug in JIRA Agile that can surface when it isn't licensed. I've verified that it exists in their current master and have opened a bug report for you. In the meantime, you should open a support ticket on support.atlassian.comand mention both this question and the bug that I have opened for you, which is

https://jira.atlassian.com/browse/GHS-10844

Thanks for the prompt reply. Unfortunately I didn't make a note of the UPM version but I'm guessing it's the latest one as the update option only appeared today. The error affects Jira globally so I guess a support ticket is the way to go.

Chris Fuller Atlassian Team Jun 23, 2014

No worries... please see my correction above, as it contains important information for support.

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