ERROR: FLD-1001 Categories=ERROR Message='Unexpected error: null'

[kevo]

Nach dem Neuanlegen eines Benutzers bekommen wir nach der Anmeldung im OX u.a Fehlermeldungen.
Das Postfach ist vorhanden, E-Mails treffen auch ein. Über das Portal werden E-Mails angezeigt und sind sogar lesbar.

Über den Reiter E-mail erhalten wir die Fehlermeldung "Server ist nicht verfügbar" und "Die Applikation wird möglicherweise nicht erwartungsgemäß funktionieren, bevor dieses Problem nicht behoben ist."

Unter Fehleranalyse wird folgendes angezeigt.

Auf dem Server trat ein vorübergehender Fehler auf. Die Anfrage konnte nicht verarbeitet werden. (ID: -705809215-4660114 / FLD-1001) 3.5.2017 11:38
/appsuite/api/folders

Fehler im Server-Log:

May 03, 2017 10:33:04 AM com.openexchange.exception.LogLevel.log(LogLevel.java:173)
ERROR: FLD-1001 Categories=ERROR Message='Unexpected error: null' exceptionID=-705809215-4648880
 com.openexchange.ajax.action=get
 com.openexchange.ajax.module=folders
 com.openexchange.database.schema=oxdatabase_5
 com.openexchange.grizzly.remoteAddress=192.1.2.3
 com.openexchange.grizzly.remotePort=50532
 com.openexchange.grizzly.requestIp=192.1.2.3
 com.openexchange.grizzly.requestURI=/ajax/folders
 com.openexchange.grizzly.serverName=mail.server.tld
 com.openexchange.grizzly.servletPath=/ajax/folders
 com.openexchange.grizzly.threadName=OXWorker-0176016
 com.openexchange.grizzly.userAgent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36
 com.openexchange.request.trackingId=1bc14c5b0bb148839d05dd1cb4de2869
 com.openexchange.session.authId=333488330a5b4320b4db09b9edccab57
 com.openexchange.session.clientId=open-xchange-appsuite
 com.openexchange.session.contextId=1
 com.openexchange.session.loginName=max.mustermann
 com.openexchange.session.sessionId=d141ae39d2014751bebd0f29fca4d7e6
 com.openexchange.session.userId=2331
 com.openexchange.session.userName=max.mustermann
com.openexchange.exception.OXException: FLD-1001 Categories=ERROR Message='Unexpected error: null' exceptionID=-705809215-4648880
        at com.openexchange.exception.OXExceptionFactory.create(OXExceptionFactory.java:173)
        at com.openexchange.exception.OXExceptionFactory.create(OXExceptionFactory.java:166)
        at com.openexchange.exception.OXExceptionFactory.create(OXExceptionFactory.java:139)
        at com.openexchange.folderstorage.FolderExceptionErrorMessage.create(FolderExceptionErrorMessage.java:442)
        at com.openexchange.folderstorage.internal.performers.GetPerformer.doGet(GetPerformer.java:168)
        at com.openexchange.folderstorage.internal.FolderServiceImpl.getFolder(FolderServiceImpl.java:197)
        at com.openexchange.folder.json.actions.GetAction.doPerform(GetAction.java:116)
        at com.openexchange.folder.json.actions.AbstractFolderAction.perform(AbstractFolderAction.java:97)
        at com.openexchange.ajax.requesthandler.DefaultDispatcher.perform(DefaultDispatcher.java:254)
        at com.openexchange.ajax.requesthandler.DispatcherServlet.handle(DispatcherServlet.java:385)
        at com.openexchange.ajax.requesthandler.DispatcherServlet.doGet(DispatcherServlet.java:308)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at com.openexchange.ajax.AJAXServlet.service(AJAXServlet.java:547)
        at com.openexchange.ajax.SessionServlet.service(SessionServlet.java:157)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at com.openexchange.http.grizzly.service.http.OSGiServletHandler$FilterChainImpl.doFilter(OSGiServletHandler.java:445)
        at com.openexchange.http.grizzly.servletfilter.RequestReportingFilter.doFilter(RequestReportingFilter.java:120)
        at com.openexchange.http.grizzly.service.http.OSGiServletHandler$FilterChainImpl.doFilter(OSGiServletHandler.java:435)
        at com.openexchange.http.grizzly.servletfilter.WrappingFilter.doFilter(WrappingFilter.java:229)
        at com.openexchange.http.grizzly.service.http.OSGiServletHandler$FilterChainImpl.doFilter(OSGiServletHandler.java:435)
        at com.openexchange.http.grizzly.service.http.OSGiAuthFilter.doFilter(OSGiAuthFilter.java:140)
        at com.openexchange.http.grizzly.service.http.OSGiServletHandler$FilterChainImpl.doFilter(OSGiServletHandler.java:435)
        at com.openexchange.http.grizzly.service.http.OSGiServletHandler$FilterChainImpl.invokeFilterChain(OSGiServletHandler.java:413)
        at org.glassfish.grizzly.servlet.ServletHandler.doServletService(ServletHandler.java:252)
        at org.glassfish.grizzly.servlet.ServletHandler.service(ServletHandler.java:194)
        at com.openexchange.http.grizzly.service.http.OSGiMainHandler.service(OSGiMainHandler.java:195)
        at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:164)
        at org.glassfish.grizzly.http.server.HttpHandlerChain.service(HttpHandlerChain.java:196)
        at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:164)
        at org.glassfish.grizzly.http.server.OXHttpServerFilter.handleRead(OXHttpServerFilter.java:347)
        at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
        at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:265)
        at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
        at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:134)
        at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
        at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:78)
        at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:770)
        at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
        at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
        at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
        at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
        at com.openexchange.threadpool.internal.CustomThreadPoolExecutor$MDCProvidingRunnable.run(CustomThreadPoolExecutor.java:2494)
        at com.openexchange.threadpool.internal.CustomThreadPoolExecutor$Worker.runTask(CustomThreadPoolExecutor.java:811)
        at com.openexchange.threadpool.internal.CustomThreadPoolExecutor$Worker.run(CustomThreadPoolExecutor.java:838)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: null
        at com.openexchange.groupware.userconfiguration.CachingUserPermissionBitsStorage.load(CachingUserPermissionBitsStorage.java:327)
        at com.openexchange.groupware.userconfiguration.CachingUserPermissionBitsStorage.get(CachingUserPermissionBitsStorage.java:312)
        at com.openexchange.groupware.userconfiguration.CachingUserPermissionBitsStorage.getUserPermissionBits(CachingUserPermissionBitsStorage.java:233)
        at com.openexchange.folderstorage.internal.CalculatePermission.calculateUserPermissions(CalculatePermission.java:122)
        at com.openexchange.folderstorage.internal.performers.AbstractUserizedFolderPerformer.getUserizedFolder(AbstractUserizedFolderPerformer.java:354)
        at com.openexchange.folderstorage.internal.performers.AbstractUserizedFolderPerformer.getUserizedFolder(AbstractUserizedFolderPerformer.java:285)
        at com.openexchange.folderstorage.internal.performers.GetPerformer.doGet(GetPerformer.java:148)
        ... 40 common frames omitted