[W1Fk1osWFErXqbvIxP6q2gAAAAM] /core/index.php/Special:WhoIsWatching/Main_Page Error from line 74 of /Applications/XAMPP/xamppfiles/htdocs/core/extensions/WhoIsWatching/src/Manager.php: Class 'EchoEvent' not found Backtrace: #0 /Applications/XAMPP/xamppfiles/htdocs/core/extensions/WhoIsWatching/src/Manager.php(50): MediaWiki\Extension\WhoIsWatching\Manager->eNotifUser(string, Title, User) #1 /Applications/XAMPP/xamppfiles/htdocs/core/extensions/WhoIsWatching/src/SpecialPage.php(216): MediaWiki\Extension\WhoIsWatching\Manager->addWatch(Title, User) #2 /Applications/XAMPP/xamppfiles/htdocs/core/extensions/WhoIsWatching/src/SpecialPage.php(195): MediaWiki\Extension\WhoIsWatching\SpecialPage->maybeAddWatcher() #3 /Applications/XAMPP/xamppfiles/htdocs/core/extensions/WhoIsWatching/src/SpecialPage.php(78): MediaWiki\Extension\WhoIsWatching\SpecialPage->addWatchersForm() #4 /Applications/XAMPP/xamppfiles/htdocs/core/includes/specialpage/SpecialPage.php(566): MediaWiki\Extension\WhoIsWatching\SpecialPage->execute(string) #5 /Applications/XAMPP/xamppfiles/htdocs/core/includes/specialpage/SpecialPageFactory.php(569): SpecialPage->run(string) #6 /Applications/XAMPP/xamppfiles/htdocs/core/includes/MediaWiki.php(288): SpecialPageFactory::executePath(Title, RequestContext) #7 /Applications/XAMPP/xamppfiles/htdocs/core/includes/MediaWiki.php(867): MediaWiki->performRequest() #8 /Applications/XAMPP/xamppfiles/htdocs/core/includes/MediaWiki.php(524): MediaWiki->main() #9 /Applications/XAMPP/xamppfiles/htdocs/core/index.php(42): MediaWiki->run() #10 {main}
Both are master.