Fatal error: Uncaught Error: Class 'Lcobucci\JWT\Signer\Rsa' not found in D:\xampp\htdocs\psp\backend\vendor\lcobucci\jwt\src\Signer\Rsa\Sha256.php:18 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\lcobucci\jwt\src\Signer\Rsa\Sha256.php on line 18