Fatal error: Uncaught Error: Class 'Lcobucci\JWT\Signer\OpenSSL' not found in /mnt/volume_lon1_01/backend/admin/vendor/lcobucci/jwt/src/Signer/Rsa.php:18 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/lcobucci/jwt/src/Signer/Rsa.php on line 18