When tlwebadm crashes, you get the traceback in tlwebadm.log. However, I think it would be useful if the traceback was also displayed to the user, ie sent to the browser. As it is now, you only get something like:
Error code 500.
Message: Internal error on page '/desktop/manapplications'.
Error code explanation: 500 = Server got itself in trouble.
See also bug 4149.
I'm not sure it's always safe to show the traceback to the user. He/she might not have full administrator privileges.
Instead we could make the error message better in that the user knows where the details can be found (the log).