Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /var/www/html/orian-wiki/vendor/wikimedia/composer-merge-plugin/src/MergePlugin.php:77 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/vendor/wikimedia/composer-merge-plugin/src/MergePlugin.php on line 77