Fatal error: Uncaught Error: Class "Cose\Key\Key" not found in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Key\OkpKey.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Key\OkpKey.php on line 15