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