Beta fluorine has a bunch of errors like this:
May 17 08:25:19 deployment-mediawiki02: #012Warning: passCaptchaLimited() expects exactly 3 parameters, 0 given in /srv/mediawiki/php-master/extensions/ConfirmEdit/SimpleCaptcha/Captcha.php on line 1093 May 17 08:25:19 deployment-mediawiki02: #012Catchable fatal error: Argument 3 passed to SimpleCaptcha::passCaptchaLimited() must be an instance of User, undefined variable given in /srv/mediawiki/php-master/extensions/ConfirmEdit/SimpleCaptcha/Captcha.php on line 1093
This is caused by https://gerrit.wikimedia.org/r/#/c/285350/ which adds a bunch of required arguments to SimpleCaptcha::passCaptchaLimited and replaces passCaptchaLimited() calls with passCaptchaLimitedFromRequest($wgRequest, $wgUser). Apparently this method is called from Flow and that has not been updated.