Request from *insert ip here* via cp2016 cp2016, Varnish XID 482097163 Error: 503, Service Unavailable at Fri, 28 Apr 2017 16:07:37 GMT
Happened only on one article, but these were the steps to produce:
It was on Dianna Agron in enwiki. Click on "revert changes." Then, on Special:RevisionReview click "revert these changes"
It happened to three people in a span of 2 minutes. Worked on other articles after.
2017-04-28 16:07:37 [WQNoxwrAEFYAAGz6vcsAAABM] mw2113 enwiki 1.29.0-wmf.21 fatal ERROR: [ea436dd4] PHP Fatal Error: Call to undefined function getUser() {"fatal_exception":{"class":"ErrorException","message":"PHP Fatal Error: Call to undefined function getUser()","code":16777217,"file":"/srv/mediawiki/php-1.29.0-wmf.21/extensions/FlaggedRevs/business/RevisionReviewForm.php","line":387,"trace":[{"file":"/srv/mediawiki/php-1.29.0-wmf.21/extensions/FlaggedRevs/business/RevisionReviewForm.php","line":387},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/extensions/FlaggedRevs/business/FRGenericSubmitForm.php","line":191,"function":"doSubmit","class":"RevisionReviewForm","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/extensions/FlaggedRevs/frontend/specialpages/actions/RevisionReview_body.php","line":110,"function":"submit","class":"FRGenericSubmitForm","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/SpecialPage.php","line":522,"function":"execute","class":"RevisionReview","type":"->","args":["NULL"]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/SpecialPageFactory.php","line":578,"function":"run","class":"SpecialPage","type":"->","args":["NULL"]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/includes/MediaWiki.php","line":287,"function":"executePath","class":"SpecialPageFactory","type":"::","args":["Title","RequestContext"]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/includes/MediaWiki.php","line":862,"function":"performRequest","class":"MediaWiki","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/includes/MediaWiki.php","line":523,"function":"main","class":"MediaWiki","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.29.0-wmf.21/index.php","line":43,"function":"run","class":"MediaWiki","type":"->","args":[]},{"file":"/srv/mediawiki/w/index.php","line":3,"function":"include","args":["string"]}]},"exception_id":"ea436dd4","caught_by":"mwe_handler"}