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