Error
MediaWiki version: n/a
TypeError: undefined is not an object (evaluating 'dialog.mediaUploadBooklet.setFile')
Stack trace is not very useful, I'm hoping the error alone is enough to debug this one.
at URL1:1206:971 at mightThrow URL2:49:154 at URL2:49:818
Impact
Error seen on the mobile editor in Mobile Safari (Mozilla/5.0 (iPhone; CPU iPhone OS 13_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.2 Mobile/15E148 Safari/604.1)
https://logstash.wikimedia.org/app/kibana#/doc/logstash-*/logstash-2020.09.03/clienterror/?id=AXRTnAhlNoG2jwpw8LS1