Try to delete via the API results in

internal_api_error_Error: [c17b30db66a15e19f6c3f02c] Exception caught: Class 'Wikimedia\Equivset\Equivset' not found

Try to delete via the toolbar results in

Backtrace:

#0 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterParser.php(1406): AbuseFilterParser::ccnorm()
#1 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterParser.php(1165): AbuseFilterParser->funcCCNorm()
#2 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(169): AbuseFilterParser->callFunc()
#3 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(166): AbuseFilterCachingParser->evalNode()
#4 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(206): AbuseFilterCachingParser->evalNode()
#5 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(251): AbuseFilterCachingParser->evalNode()
#6 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(251): AbuseFilterCachingParser->evalNode()
#7 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(342): AbuseFilterCachingParser->evalNode()
#8 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(101): AbuseFilterCachingParser->evalNode()
#9 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterCachingParser.php(60): AbuseFilterCachingParser->evalTree()
#10 /var/www/production/w/extensions/AbuseFilter/includes/parser/AbuseFilterParser.php(321): AbuseFilterCachingParser->intEval()
#11 /var/www/production/w/extensions/AbuseFilter/includes/AbuseFilter.php(392): AbuseFilterParser->parse()
#12 /var/www/production/w/extensions/AbuseFilter/includes/AbuseFilterRunner.php(426): AbuseFilter::checkConditions()
#13 /var/www/production/w/extensions/AbuseFilter/includes/AbuseFilterRunner.php(339): AbuseFilterRunner->checkFilter()
#14 /var/www/production/w/extensions/AbuseFilter/includes/AbuseFilterRunner.php(173): AbuseFilterRunner->checkAllFilters()
#15 /var/www/production/w/extensions/AbuseFilter/includes/AbuseFilterHooks.php(336): AbuseFilterRunner->run()
#16 /var/www/production/w/includes/HookContainer/HookContainer.php(329): AbuseFilterHooks::onArticleDelete()
#17 /var/www/production/w/includes/HookContainer/HookContainer.php(132): MediaWiki\HookContainer\HookContainer->callLegacyHook()
#18 /var/www/production/w/includes/HookContainer/HookRunner.php(710): MediaWiki\HookContainer\HookContainer->run()
#19 /var/www/production/w/includes/page/WikiPage.php(2810): MediaWiki\HookContainer\HookRunner->onArticleDelete()
#20 /var/www/production/w/includes/page/Article.php(2178): WikiPage->doDeleteArticleReal()
#21 /var/www/production/w/includes/page/Article.php(1914): Article->doDelete()
#22 /var/www/production/w/includes/actions/DeleteAction.php(41): Article->delete()
#23 /var/www/production/w/includes/MediaWiki.php(531): DeleteAction->show()
#24 /var/www/production/w/includes/MediaWiki.php(313): MediaWiki->performAction()
#25 /var/www/production/w/includes/MediaWiki.php(947): MediaWiki->performRequest()
#26 /var/www/production/w/includes/MediaWiki.php(547): MediaWiki->main()
#27 /var/www/production/w/index.php(53): MediaWiki->run()
#28 /var/www/production/w/index.php(46): wfIndexMain()
#29 {main}