The MediaModeration scanning script keeps crashing on production with an error with the error "array of values must be a list". This restriction was introduced in 9ae6fbda79effc2b6b4bfa02673959793d42c9f9 and was found today as the script was restarted which caused the code to start running on wmf.7 instead of wmf.6 (which did not have this patch).
Error
message
InvalidArgumentException from line 46 of /srv/mediawiki/php-1.43.0-wmf.7/includes/libs/rdbms/expression/Expression.php: The array of values must be a list
trace
InvalidArgumentException from line 46 of /srv/mediawiki/php-1.43.0-wmf.7/includes/libs/rdbms/expression/Expression.php: The array of values must be a list
#0 /srv/mediawiki/php-1.43.0-wmf.7/includes/libs/rdbms/database/DBConnRef.php(529): Wikimedia\Rdbms\Expression->__construct('mms_sha1', '!=', Array)
#1 /srv/mediawiki/php-1.43.0-wmf.7/extensions/MediaModeration/src/Services/MediaModerationDatabaseLookup.php(160): Wikimedia\Rdbms\DBConnRef->expr('mms_sha1', '!=', Array)
#2 /srv/mediawiki/php-1.43.0-wmf.7/extensions/MediaModeration/src/Services/MediaModerationDatabaseLookup.php(191): MediaWiki\Extension\MediaModeration\Services\MediaModerationDatabaseLookup->newSelectQueryBuilderForScan('19700101000000', 'ASC', Array, NULL)
#3 /srv/mediawiki/php-1.43.0-wmf.7/extensions/MediaModeration/maintenance/scanFilesInScanTable.php(239): MediaWiki\Extension\MediaModeration\Services\MediaModerationDatabaseLookup->getSha1ValuesForScan(200, '19700101000000', 'ASC', Array, NULL)
#4 /srv/mediawiki/php-1.43.0-wmf.7/extensions/MediaModeration/maintenance/scanFilesInScanTable.php(110): MediaWiki\Extension\MediaModeration\Maintenance\ScanFilesInScanTable->generateSha1ValuesForScan()
#5 /srv/mediawiki/php-1.43.0-wmf.7/maintenance/includes/MaintenanceRunner.php(696): MediaWiki\Extension\MediaModeration\Maintenance\ScanFilesInScanTable->execute()
#6 /srv/mediawiki/php-1.43.0-wmf.7/maintenance/run.php(51): MediaWiki\Maintenance\MaintenanceRunner->run()
#7 /srv/mediawiki/multiversion/MWScript.php(158): require_once('/srv/mediawiki/...')
#8 {main}Impact
Cannot run scanning script on wmf.7.
Notes
Also the last checked timestamp is wrong. This needs to be investigated.