Fatal error: Uncaught Error: Class 'Drupal\editor\Plugin\EditorBase' not found in /var/www/html/tmp/contrib/codemirror_editor/src/Plugin/Editor/CodeMirrorEditor.php:23 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/codemirror_editor/src/Plugin/Editor/CodeMirrorEditor.php on line 23