Fatal error: Uncaught MediaWiki\Registration\ExtensionDependencyError: DiscussionTools requires VisualEditor to be installed. in /var/www/html/includes/registration/ExtensionRegistry.php:477 Stack trace: #0 /var/www/html/includes/registration/ExtensionRegistry.php(329): MediaWiki\Registration\ExtensionRegistry->readFromQueue(Array) #1 /var/www/html/includes/Setup.php(299): MediaWiki\Registration\ExtensionRegistry->loadFromQueue() #2 /var/www/html/includes/WebStart.php(86): require_once('/var/www/html/i...') #3 /var/www/html/index.php(50): require('/var/www/html/i...') #4 {main} thrown in /var/www/html/includes/registration/ExtensionRegistry.php on line 477