Fatal error: Uncaught Error: Interface 'Ratchet\Session\Serialize\HandlerInterface' not found in C:\xampp\htdocs\datosgr\cons\vendor\cboden\ratchet\src\Ratchet\Session\Serialize\PhpBinaryHandler.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\datosgr\cons\vendor\cboden\ratchet\src\Ratchet\Session\Serialize\PhpBinaryHandler.php on line 4