Hi, guys! I'm trying to use Ai Gateway

400 Bad Request: "{<EOL>  "error": {<EOL>    "code": 400,<EOL>    "message": "Invalid JSON payload received. Unknown name \"system_instruction\": Cannot find field.\nInvalid JSON payload received. Unknown name \"response_mime_type\" at 'generation_config': Cannot find field.",<EOL>    "status": "INVALID_ARGUMENT",<EOL>    "details": [<EOL>      {<EOL>        "@type": "type.googleapis.com/google.rpc.BadRequest",<EOL>        "fieldViolations": [<EOL>          {<EOL>            "description": "Invalid JSON payload received. Unknown name \"system_instruction\": Cannot find field."<EOL>          },<EOL>          {<EOL>            "field": "generation_config",<EOL>            "description": "Invalid JSON payload received. Unknown name \"response_mime_type\" at 'generation_config': Cannot find field."<EOL>          }<EOL>        ]<EOL>      }<EOL>    ]<EOL>  }<EOL>}<EOL>"