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/ResponsiveImageStyleXmlAnonTest.php:11
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/responsive_image/tests/src/Functional/Rest/ResponsiveImageStyleXmlAnonTest.php on line 11