Hi folks, after I run a Manual Library Update, the Control Panel becomes inaccessible and the browser returns a generic 504 Gateway Time-out error. It stays offline for around 5 to 10 minutes and then it comes back online automatically. The Library update seems to work fine, but at the end of the process, before it becomes unavailable, I get an "error: undefined" message on the update status screen. Any ideas of what might be the problem?