Fatal error: Uncaught Error: Class "Drupal\FunctionalTests\Update\UpdatePathTestBase" not found in /home/qcsvlel/www/core/modules/system/tests/src/Functional/Update/RemovePathKeyTest.php:14 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/system/tests/src/Functional/Update/RemovePathKeyTest.php on line 14