Fatal error: Uncaught Error: Class "CBOR\AbstractCBORObject" not found in C:\xampp\htdocs\bilipoa\vendor\spomky-labs\cbor-php\src\UnsignedIntegerObject.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bilipoa\vendor\spomky-labs\cbor-php\src\UnsignedIntegerObject.php on line 12