Fatal error: Uncaught Error: Class "Lcobucci\JWT\Signer\Rsa" not found in I:\www\oauth2\auth_server\vendor\lcobucci\jwt\src\Signer\Rsa\Sha256.php:10 Stack trace: #0 {main} thrown in I:\www\oauth2\auth_server\vendor\lcobucci\jwt\src\Signer\Rsa\Sha256.php on line 10