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    <div class="moz-text-flowed" style="font-family: -moz-fixed;
      font-size: 12px;" lang="x-central-euro">Hello,
      <br>
      I upgraded oVirt to 3.3 and when I want to launch SPICE console I
      get error 500 on web ui. I tried to install websovketproxy
      package, enabled it by "engine-config -s
      WebSocketProxy="Engine:6100" " But it did not help. I dont know
      what I did wrong. Logs are bellow. Thank you for advice
      <br>
      <br>
      ==&gt; ovirt-engine/engine.log &lt;==
      <br>
      2013-07-25 15:22:31,717 INFO
      [org.ovirt.engine.core.bll.SetVmTicketCommand]
      (ajp--127.0.0.1-8702-8) Running command: SetVmTicketCommand
      internal: false. Entities affected :  ID:
      8c6ea349-902f-4457-8c3f-49ee5d4cf6b9 Type: VM
      <br>
      2013-07-25 15:22:31,726 INFO
      [org.ovirt.engine.core.vdsbroker.vdsbroker.SetVmTicketVDSCommand]
      (ajp--127.0.0.1-8702-8) START, SetVmTicketVDSCommand(HostName =
      node19.nbu.cz, HostId = dc1fde46-66af-4f66-947a-12791cd6b9a0,
      vmId=8c6ea349-902f-4457-8c3f-49ee5d4cf6b9, ticket=7LP81DPq1CpR,
      validTime=120,m userName=admin@internal,
      userId=fdfc627c-d875-11e0-90f0-83df133b58cc), log id: 1b7e23bf
      <br>
      2013-07-25 15:22:31,764 INFO
      [org.ovirt.engine.core.vdsbroker.vdsbroker.SetVmTicketVDSCommand]
      (ajp--127.0.0.1-8702-8) FINISH, SetVmTicketVDSCommand, log id:
      1b7e23bf
      <br>
      <br>
      ==&gt; ovirt-engine/server.log &lt;==
      <br>
      2013-07-25 15:22:31,865 ERROR
      [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/webadmin]]
      (ajp--127.0.0.1-8702-8) Exception while dispatching incoming RPC
      call: java.lang.NullPointerException
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink.getBytes(WebModePayloadSink.java:860)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.push(WebModePayloadSink.java:767)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.constructorFunction(WebModePayloadSink.java:636)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:259)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InstantiateCommand.traverse(InstantiateCommand.java:54)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:236)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.ArrayValueCommand.traverse(ArrayValueCommand.java:53)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:291)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InstantiateCommand.traverse(InstantiateCommand.java:54)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:375)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InvokeCustomFieldSerializerCommand.traverse(InvokeCustomFieldSerializerCommand.java:76)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:236)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.ArrayValueCommand.traverse(ArrayValueCommand.java:53)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:291)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InstantiateCommand.traverse(InstantiateCommand.java:54)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:362)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InvokeCustomFieldSerializerCommand.traverse(InvokeCustomFieldSerializerCommand.java:76)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:236)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.ArrayValueCommand.traverse(ArrayValueCommand.java:53)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:291)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InstantiateCommand.traverse(InstantiateCommand.java:54)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:375)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.InvokeCustomFieldSerializerCommand.traverse(InvokeCustomFieldSerializerCommand.java:76)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink$PayloadVisitor.visit(WebModePayloadSink.java:406)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.ReturnCommand.traverse(ReturnCommand.java:44)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.doAccept(RpcCommandVisitor.java:320)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.client.ast.RpcCommandVisitor.accept(RpcCommandVisitor.java:42)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.WebModePayloadSink.accept(WebModePayloadSink.java:890)
      [gwt-servlet.jar:]
      <br>
         at com.google.gwt.rpc.server.RPC.streamResponse(RPC.java:472)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.RPC.invokeAndStreamResponse(RPC.java:198)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.RpcServlet.processCall(RpcServlet.java:172)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.rpc.server.RpcServlet.processPost(RpcServlet.java:233)
      [gwt-servlet.jar:]
      <br>
         at
      com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
      [gwt-servlet.jar:]
      <br>
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
      [jboss-servlet-3.0-api.jar:1.0.1.Final]
      <br>
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
      [jboss-servlet-3.0-api.jar:1.0.1.Final]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      [jboss-web.jar:]
      <br>
         at
      org.ovirt.engine.ui.frontend.server.gwt.GwtCachingFilter.doFilter(GwtCachingFilter.java:132)
      [frontend.jar:]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      [jboss-web.jar:]
      <br>
         at
      org.ovirt.engine.core.utils.servlet.LocaleFilter.doFilter(LocaleFilter.java:59)
      [utils.jar:]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:489)
      [jboss-web.jar:]
      <br>
         at
      org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
      [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
      <br>
         at
      org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      [jboss-web.jar:]
      <br>
         at
      org.jboss.web.rewrite.RewriteValve.invoke(RewriteValve.java:466)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      [jboss-web.jar:]
      <br>
         at
      org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
      [jboss-web.jar:]
      <br>
         at
      org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:505)
      [jboss-web.jar:]
      <br>
         at
      org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:445)
      [jboss-web.jar:]
      <br>
         at
      org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
      [jboss-web.jar:]
      <br>
         at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
      <br>
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