Fatal error: Uncaught Error: Class "Drupal\Tests\views\Kernel\Plugin\RelationshipJoinTestBase" not found in /home/www/drupal8/test/core/modules/views/tests/src/Kernel/Plugin/RelationshipTest.php:14
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/views/tests/src/Kernel/Plugin/RelationshipTest.php on line 14