Fatal error: Uncaught InvalidArgumentException: Invalid database prefix: for in /home/web/drupal/web/core/lib/Drupal/Core/Test/TestDatabase.php:85 Stack trace: #0 /home/web/drupal/web/core/lib/Drupal/Core/DrupalKernel.php(1021): Drupal\Core\Test\TestDatabase->__construct() #1 /home/web/drupal/web/core/lib/Drupal/Core/DrupalKernel.php(696): Drupal\Core\DrupalKernel::bootEnvironment() #2 /home/web/drupal/web/index.php(19): Drupal\Core\DrupalKernel->handle() #3 {main} thrown in /home/web/drupal/web/core/lib/Drupal/Core/Test/TestDatabase.php on line 85