Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /var/www/html/ihp.stage-ci.design/vendor/oomphinc/composer-installers-extender/src/Plugin.php:12 Stack trace: #0 {main} thrown in /var/www/html/ihp.stage-ci.design/vendor/oomphinc/composer-installers-extender/src/Plugin.php on line 12