Fatal error: Uncaught Error: Class "Drupal\Tests\responsive_image\Functional\Rest\ResponsiveImageStyleResourceTestBase" not found in /home/www/drupal8/test/core/modules/responsive_image/tests/src/Functional/Rest/ResponsiveImageStyleXmlBasicAuthTest.php:11 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/responsive_image/tests/src/Functional/Rest/ResponsiveImageStyleXmlBasicAuthTest.php on line 11