Trying to move a page on English Wikipedia resulted in an internal error:
[XaalggpAIC4AAJFHVOwAAACG] 2019-10-16 05:07:15: Fatal exception of type "MWException"
However, the move later went successfully.
- Go to https://commons.wikimedia.beta.wmflabs.org/wiki/Special:Preferences#mw-prefsection-gadgets
- Enable LuckyRename (slightly changed from the version currently used on production enwiki to trigger this bug)
- Go to any file page.
- Rename it using LuckyRename. See https://en.wikipedia.org/wiki/User:Alexis_Jazz/LuckyRename for info. Feel free to +1 the last number of https://commons.wikimedia.beta.wmflabs.org/wiki/File:76f2dbef4cc9_26_100.jpg.