Fatal error: Uncaught Error: Interface 'Namshi\JOSE\Base64\Encoder' not found in D:\xampp\htdocs\psp\backend\vendor\namshi\jose\src\Namshi\JOSE\Base64\Base64Encoder.php:5 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\namshi\jose\src\Namshi\JOSE\Base64\Base64Encoder.php on line 5