Fatal error: Uncaught Error: Class "Drupal\config_test\Entity\ConfigTest" not found in /home/www/drupal8/test/core/modules/config/tests/config_test/src/Entity/ConfigQueryTest.php:27 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/config/tests/config_test/src/Entity/ConfigQueryTest.php on line 27