[{exception_id}] {exception_url} BadMethodCallException from line 78 of /srv/mediawiki/php-1.31.0-wmf.10/extensions/ProofreadPage/includes/page/DatabaseIndexForPageLookup.php: Call to a member function exists() on a non-object (boolean)
Actual code:
$image = $this->repoGroup->findFile( $imageTitle ); if ( $image->exists() .. ) { .. }
Most likely a regression caused by rEPRP5f80293b30df: Introduces IndexForPageLookup (or a56ea07e0). (Both merged without review?).
Previously: