2015-08-28 17:45:33,190 WARN  info.magnolia.module.cache.app.CacheToolsPresenter
: Unable to flush all caches.
java.lang.NullPointerException
        at info.magnolia.module.cache.mbean.CacheMonitor.countFlush(CacheMonitor
.java:123)
        at info.magnolia.module.cache.ehcache.EhCacheWrapper.clear(EhCacheWrappe
r.java:155)
        at info.magnolia.module.cache.commands.FlushCachesCommand.execute(FlushC
achesCommand.java:67)
        at info.magnolia.module.cache.app.CacheToolsPresenter.flushAllCaches(Cac
heToolsPresenter.java:141)
        at info.magnolia.module.cache.app.CacheToolsViewImpl$4.buttonClick(Cache
ToolsViewImpl.java:209)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:508)

        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:198)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientCon
nector.java:977)
        at com.vaadin.ui.Button.fireClick(Button.java:393)
        at com.vaadin.ui.Button$1.click(Button.java:61)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.j
ava:168)
        at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.j
ava:118)
        at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(Se
rverRpcHandler.java:291)
        at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcH
andler.java:184)
        at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandle
Request(UidlRequestHandler.java:92)
        at com.vaadin.server.SynchronizedRequestHandler.handleRequest(Synchroniz
edRequestHandler.java:41)
        at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408
)
        at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:350)
        at info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service(Admin
centralVaadinServlet.java:131)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDi
spatchingFilter.java:148)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.ja
va:65)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.
java:69)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass
.java:58)
        at info.magnolia.module.cache.executor.CompositeExecutor.processCacheReq
uest(CompositeExecutor.java:67)
        at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.ja
va:174)
        at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(O
ncePerRequestAbstractMgnlFilter.java:59)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentS
upportFilter.java:74)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFil
ter.java:84)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFi
lter.java:57)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCa
llbackFilter.java:80)
        at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(O
ncePerRequestAbstractMgnlFilter.java:59)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:94
)
        at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(O
ncePerRequestAbstractMgnlFilter.java:59)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeF
ilter.java:119)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFil
ter.java:83)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java
:73)
        at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(O
ncePerRequestAbstractMgnlFilter.java:59)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilte
r.java:127)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.UnicodeNormalizationFilter.doFilter(Unicode
NormalizationFilter.java:88)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:81)
        at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilte
r.java:112)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:1
28)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.ja
va:79)
        at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.ja
va:65)
        at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFil
ter.java:85)
        at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeD
estroyMgnlFilterWrapper.java:107)
        at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterD
ispatcher.java:67)
        at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java
:108)
        at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java
:94)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:222)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:123)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica
torBase.java:502)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:171)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
953)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:408)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp
11Processor.java:1041)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
AbstractProtocol.java:603)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoin
t.java:312)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:617)
        at java.lang.Thread.run(Thread.java:745)