Fatal error: Uncaught Error: Class "Drupal\Component\PhpStorage\FileStorage" not found in /home/www/drupal8/test/core/lib/Drupal/Component/PhpStorage/MTimeProtectedFastFileStorage.php:37 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/lib/Drupal/Component/PhpStorage/MTimeProtectedFastFileStorage.php on line 37