Fatal error: Uncaught Error: Class "Drupal\Tests\user\Functional\Rest\UserResourceTestBase" not found in /home/qcsvlel/www/core/modules/user/tests/src/Functional/Rest/UserXmlAnonTest.php:13 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/user/tests/src/Functional/Rest/UserXmlAnonTest.php on line 13