Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /home/ipsitaltd/public_html/btsh-backend-test/vendor/wikimedia/composer-merge-plugin/src/MergePlugin.php:77 Stack trace: #0 {main} thrown in /home/ipsitaltd/public_html/btsh-backend-test/vendor/wikimedia/composer-merge-plugin/src/MergePlugin.php on line 77