Fatal error: Uncaught Error: Class "Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema" not found in /home/www/drupal8/test/core/modules/user/src/UserStorageSchema.php:12
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/user/src/UserStorageSchema.php on line 12