The link to bugzilla at Special:GWToolset need a update to phabricator.
https://bugzilla.wikimedia.org/enter_bug.cgi?assigned_to=wikibugs-l@lists.wikimedia.org&attach_text=&blocked=58224&bug_file_loc=http://&bug_severity=normal&bug_status=NEW&cf_browser=---&cf_platform=---&comment=please+add+the+following+domain(s)+to+the+wgCopyUploadsDomains+whitelist:&component=Site+requests&contenttypeentry=&contenttypemethod=autodetect&contenttypeselection=text/plain&data=&dependson=&description=&flag_type-3=X&form_name=enter_bug&keywords=&maketemplate=Remember+values+as+bookmarkable+template&op_sys=All&product=Wikimedia&rep_platform=All&short_desc=&target_milestone=---&version=wmf-deployment
See T75832: Redirect Bugzilla enter_bug.cgi to https://phabricator.wikimedia.org/home/create/.