Fatal error: Uncaught Error: Class "Lcobucci\JWT\Signer\OpenSSL" not found in I:\www\oauth2\auth_server\vendor\lcobucci\jwt\src\Signer\Rsa.php:8 Stack trace: #0 {main} thrown in I:\www\oauth2\auth_server\vendor\lcobucci\jwt\src\Signer\Rsa.php on line 8