Fatal error: Uncaught Error: Class "League\OAuth1\Client\Server\Server" not found in C:\xampp\htdocs\londoncityroom\vendor\league\oauth1-client\src\Server\Xing.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\londoncityroom\vendor\league\oauth1-client\src\Server\Xing.php on line 7