Thread:Project:Support desk/Upgraded old MW site to 1.23.3 and thumbnails stopped working/reply (10)

Sorry for not replying earlier

Tried to set up debugging by just setting the Debug log to /tmp/mediawiki.dbg (file not in existence)

I did this by adding it to LocalSettings.php as follows

$wgDebugLogFile = "/tmp/mediawiki.dbg"

That made media wiki stop working completely.