Seen in production logs:
May 31 17:05:21 mw1102: PHP Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #1 is not an array in /usr/local/apache/common-local/php-1.24wmf7/extensions/Flow/includes/ReferenceClarifier.php on line 71
May 31 17:05:21 mw1102: PHP Warning: Invalid argument supplied for foreach() in /usr/local/apache/common-local/php-1.24wmf7/extensions/Flow/includes/ReferenceClarifier.php on line 75
Version: master
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=65963