That is an unexpected server exception that somehow was returned to the GUI.  It should not happen unless perhaps your server was taken down while the GUI session was connected.  You can go to the Message Center and investigate the Exception further, and then post more details about the the specific problem.  The message center can be opened by clicking the button in the top right area of the GUI screen.

Beyond asking about the exception here, you can also report the detailed problem in RHQ Bugzilla.

BTW: in case people haven't noticed, most times when you get these exceptions, in the exception message you will see a number "code" in square brackets (like "[1387686485438]" or something like it). The purpose of this unique code is to match that error with the error in the server.

You can find the corresponding error in the server logs by just looking for that same "code" number (its actually just a epoch millis timestamp) within the server log. This allows you to match an error you see in the UI with the actual error that happened in the server. Once you match up the server-side error, you can look at the server logs more closely to find out what happened just before it to help debug the issue.

Hi John Mazzitelli,

    I am also facing this same issue, But not getting that unique code ("[1387686485438]"). But I am getting like ("[]"). In this case, what can do ?

Regards,

ArunRaj

Then it is probably an error generated directly from inside the UI itself and did not come from the server. In that case, the server side logs are probably not useful since they won't involve the code that was in error. It would involve debugging the UI code.

Of course, without seeing the actual error message and its stack trace, I can't say whether this is the case for your particular error message, but that sounds like what it normally would be.