Fatal error: Uncaught Error: Class "Drupal\Tests\locale\Functional\LocaleUpdateBase" not found in /home/qcsvlel/www/core/modules/locale/tests/src/Functional/LocaleTranslationDownloadTest.php:16 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/locale/tests/src/Functional/LocaleTranslationDownloadTest.php on line 16