Fatal error: Uncaught Error: Class "ExtensionRegistry" not found in /var/www/html/orian-wiki/extensions/VisualEditor/includes/VEParsoid/ServiceWiring.php:31
Stack trace:
#0 {main}
thrown in /var/www/html/orian-wiki/extensions/VisualEditor/includes/VEParsoid/ServiceWiring.php on line 31