Fatal error: Uncaught Error: Class "Drupal\token\Tests\TokenTestBase" not found in /home/www/drupal8/test/modules/token/src/Tests/Tree/AutocompleteTest.php:12 Stack trace: #0 {main} thrown in /home/www/drupal8/test/modules/token/src/Tests/Tree/AutocompleteTest.php on line 12