Fatal error: Uncaught Error: Interface "Amp\Serialization\Serializer" not found in C:\xampp\htdocs\mflux\vendor\amphp\serialization\src\CompressingSerializer.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mflux\vendor\amphp\serialization\src\CompressingSerializer.php on line 5