Fatal error: Uncaught Error: Class "Cose\Algorithm\Mac\Hmac" not found in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Algorithm\Mac\HS256.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bilipoa\vendor\web-auth\cose-lib\src\Algorithm\Mac\HS256.php on line 7