Fatal error: Uncaught Error: Class "MediaWiki\Extension\Notifications\Formatters\EchoEventFormatter" not found in /var/www/html/orian-wiki/extensions/Echo/includes/Formatters/EchoModelFormatter.php:9
Stack trace:
#0 {main}
thrown in /var/www/html/orian-wiki/extensions/Echo/includes/Formatters/EchoModelFormatter.php on line 9