Created attachment 1108589 [details] server log Description of problem: [WebAdmin] - "Error message appears in the UI "Uncaught exception occurred." when pressing on a rhev-h server that have a new version available icon. If i have a node(rhev-h) server with an upgrade icon next to him in the UI - 'Hosts' main tab and i'm pressing with the mouse cursor on the server, a "Uncaught exception occurred. Please try reloading the page. Details: Exception caught: (TypeError) __gwt$exception: <skipped>: Cannot read property 'cZ' of null" From server.log --> 2015-12-22 09:10:36,084 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/ovirt-engine/webadmin]] (ajp-/127.0.0.1:8702-21) Exception while dispatching incoming RPC call: com.google.gwt.user.client.rpc.RpcTokenException: Invalid RPC token (Invalid XSRF token) Version-Release number of selected component (if applicable): 3.6.1.3-0.1.el6 Steps to Reproduce: 1. Have an available new version for your node(rhev-h) server(icon should appear in UI) 2. Press the server with the mouse cursor Actual results: "Uncaught exception occurred. Please try reloading the page. Details: Exception caught: (TypeError) __gwt$exception: Expected results: Not sure if it's part of the new UI feature, but this must be improved.
Created attachment 1108590 [details] javaconsole javascript console output screenshots
seems like an 'infra' issue, but assigning to Alexander for investigation. [BTW, I don't think that the "Invalid XSRF token" server side log snippet is relevant - the javascript log implies an NPE somewhere in the UI code]
Looking at the obfuscated stack trace and rpm version. The problem appears to happen in org.ovirt.engine.core.common.VdcActionUtils at line 340 which is 'canExecute'. I see lots of stuff in there that could potentially be a null pointer exception. @Einav, Yes this is probably an infra bug.
verified on rhevm-3.6.5.3-0.1.el6.noarch with DisplayUncaughtUIExceptions=true repeating scenarios form this bug are now not throwing UI exceptions