Fatal error: Uncaught Error: Interface 'Lcobucci\JWT\Signer' not found in D:\xampp\htdocs\psp\backend\vendor\lcobucci\jwt\src\Signer\BaseSigner.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\lcobucci\jwt\src\Signer\BaseSigner.php on line 21