Fatal error: Uncaught Error: Class 'Lcobucci\JWT\Signer\Rsa' not found in C:\xampp\htdocs\laravel-back\vendor\lcobucci\jwt\src\Signer\Rsa\Sha384.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-back\vendor\lcobucci\jwt\src\Signer\Rsa\Sha384.php on line 18