Jul 25, 2017 6:57:15 AM com.vaadin.server.DefaultErrorHandler doDefault
SEVERE: 
java.lang.NullPointerException

Jul 25, 2017 6:57:18 AM com.vaadin.server.DefaultErrorHandler doDefault
SEVERE: 
java.lang.NullPointerException

2017-07-25 06:57:18,037 ERROR magnolia.ui.admincentral.AdmincentralVaadinServlet: An internal error has occurred in the VaadinServlet.
javax.servlet.ServletException: com.vaadin.server.ServiceException: java.lang.NullPointerException
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:367)
	at info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service(AdmincentralVaadinServlet.java:131)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:148)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cumulus.integration.filter.CumulusSessionFilter.doFilter(CumulusSessionFilter.java:72)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:69)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58)
	at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:67)
	at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:220)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:74)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:84)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:94)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:119)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.multisite.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:110)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:127)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:64)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:71)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.personalization.preview.filter.PreviewFilter.doFilter(PreviewFilter.java:92)
	at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:155)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:128)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107)
	at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.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(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:480)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1504)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1460)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: com.vaadin.server.ServiceException: java.lang.NullPointerException
	at com.vaadin.server.VaadinService.handleExceptionDuringRequest(VaadinService.java:1469)
	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1426)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:365)
	... 108 more
Caused by: java.lang.NullPointerException