Fatal error: Uncaught Error: Class "League\OAuth2\Server\ResponseTypes\AbstractResponseType" not found in /var/www/html/w/vendor/league/oauth2-server/tests/Stubs/StubResponseType.php:13 Stack trace: #0 {main} thrown in /var/www/html/w/vendor/league/oauth2-server/tests/Stubs/StubResponseType.php on line 13