[xwiki-users] Failed to get fields for class [org.xwiki.activeinstalls.internal.client.DefaultPingSender]

Hi. We have upgraded xwiki enterprise from 8 to 9.0 versionb on debian: apt-get update && apt-get upgrade # dpkg -l | grep xwiki ii xwiki-enterprise-common 9.0+3 ii xwiki-enterprise-pgsql-common 9.0+3 ii xwiki-enterprise-tomcat8-common 9.0+3 ii xwiki-enterprise-tomcat8-pgsql 9.0+3 And now we can't get started xwiki. The following error is received: SEVERE: Exception sending context initialized event to listener instance of class org.xwiki.container.servlet.XWikiServletContextListener java.lang.NoClassDefFoundError: Failed to get fields for class [org.xwiki.activeinstalls.internal.client.DefaultPingSender] because the class [io/searchbox/Action] couldn't be found in the ClassLoader. at org.xwiki.component.util.ReflectionUtils.getAllFields(ReflectionUtils.java:72) at org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptor(ComponentDescriptorFactory.java:132) at org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptors(ComponentDescriptorFactory.java:105) at org.xwiki.component.annotation.ComponentAnnotationLoader.register(ComponentAnnotationLoader.java:168) at org.xwiki.component.annotation.ComponentAnnotationLoader.initialize(ComponentAnnotationLoader.java:136) at org.xwiki.component.annotation.ComponentAnnotationLoader.initialize(ComponentAnnotationLoader.java:118) at org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:151) at org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:61) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4832) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5256) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:724) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:581) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1685) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) 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) фев 08, 2017 6:03:35 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Error listenerStart Can someone help ?