Fatal error: Uncaught Error: Class "Drupal\Tests\views\Functional\ViewTestBase" not found in /home/qcsvlel/www/core/modules/views/tests/src/Functional/ViewsFormAlterTest.php:12 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/views/tests/src/Functional/ViewsFormAlterTest.php on line 12