Fatal error: Uncaught Error: Interface 'Drupal\Component\Plugin\PluginManagerInterface' not found in /var/www/html/tmp/contrib/group/src/Plugin/GroupContentEnablerManagerInterface.php:13 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/group/src/Plugin/GroupContentEnablerManagerInterface.php on line 13