Fatal error: Uncaught Error: Class "Cose\Algorithm\Signature\ECDSA\ECDSA" not found in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Algorithm\Signature\ECDSA\ES512.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Algorithm\Signature\ECDSA\ES512.php on line 10