Fatal error: Uncaught Error: Class 'Lcobucci\JWT\Signer\Hmac' not found in C:\xampp\htdocs\laravel-back\vendor\lcobucci\jwt\src\Signer\Hmac\Sha256.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-back\vendor\lcobucci\jwt\src\Signer\Hmac\Sha256.php on line 18