I want to add a prefix to my database Drupal8 how? I want to add a prefix to my database Drupal8 how? I change the file  setting.php but it appears an error
Changing the $databases['default']['default']['prefix'] setting does not change your database. You'll have to either manually prefix your existing DB tables or run the installer again while placing the d8_ prefix in the Advanced Options > Table name prefix field of the D8 installer.