What is the problem?
On deployment-deploy01.eqiad.wmflabs, running sql enwiki I see:
Notice: Undefined variable: wgFileBlacklist in /srv/mediawiki-staging/wmf-config/CommonSettings.php on line 678 Warning: array_merge(): Argument #1 is not an array in /srv/mediawiki-staging/wmf-config/CommonSettings.php on line 678