Fatal error: Uncaught Error: Class "Drupal\Tests\rest\Functional\EntityResource\EntityResourceTestBase" not found in /home/qcsvlel/www/core/modules/contact/tests/src/Functional/Rest/MessageResourceTestBase.php:16 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/contact/tests/src/Functional/Rest/MessageResourceTestBase.php on line 16