Fatal error: Uncaught Error: Class 'Drupal\Core\Entity\ContentEntityForm' not found in /var/www/html/tmp/contrib/entity/tests/modules/entity_module_test/src/Form/EnhancedEntityForm.php:9 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/entity/tests/modules/entity_module_test/src/Form/EnhancedEntityForm.php on line 9