Fatal error: Uncaught Error: Class "Lcobucci\JWT\Signer\Hmac" not found in C:\xampp\htdocs\vendor\lcobucci\jwt\src\Signer\Hmac\UnsafeSha512.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\lcobucci\jwt\src\Signer\Hmac\UnsafeSha512.php on line 9