Last modified: 2013-06-29 18:46:35 UTC
At a lot or almost at all Mediawiki at message "Fatal exception of type MWException" is shown, sometimes with, sometimes withomt the skin.
This is actively being worked on: <https://wikitech.wikimedia.org/w/index.php?title=Server_Admin_Log&oldid=75751>.
*** Bug 50343 has been marked as a duplicate of this bug. ***
https://wikitech.wikimedia.org/w/index.php?title=Server_Admin_Log&oldid=75751 05:00 Tim: reverting to 1.22wmf7 This did the trick. For now.
Causes for this bug (summarized by Tim Starling): * extension-list was modified in git, but change was not properly deployed * WikibaseDataModel returns null from file level of its extension setup file, causing mergeMessageFileList.php to abort even when file was present * Bug in mw-update-l10n, see bug 50347
https://wikitech.wikimedia.org/wiki/Incident_documentation/20130628-Site has more details