Fatal error: Uncaught Error: Interface "MediaWiki\Extension\Notifications\Hooks\BeforeDisplayOrangeAlertHook" not found in /var/www/html/extensions/Flow/includes/Hooks.php:108 Stack trace: #0 /var/www/html/includes/AutoLoader.php(221): require() #1 [internal function]: AutoLoader::autoload('Flow\\Hooks') #2 /var/www/html/includes/registration/ExtensionRegistry.php(552): is_callable('Flow\\Hooks::reg...') #3 /var/www/html/includes/registration/ExtensionRegistry.php(317): ExtensionRegistry->exportExtractedData(Array) #4 /var/www/html/includes/Setup.php(285): ExtensionRegistry->loadFromQueue() #5 /var/www/html/includes/WebStart.php(92): require_once('/var/www/html/i...') #6 /var/www/html/index.php(44): require('/var/www/html/i...') #7 {main} thrown in /var/www/html/extensions/Flow/includes/Hooks.php on line 108