Fatal error: Uncaught Error: Class "Ratchet\AbstractConnectionDecorator" not found in C:\xampp\htdocs\hannoole\schol\vendor\cboden\ratchet\tests\helpers\Ratchet\Mock\ConnectionDecorator.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\schol\vendor\cboden\ratchet\tests\helpers\Ratchet\Mock\ConnectionDecorator.php on line 5