Conversation History API Code: 4002

I’m trying to use the API to get the conversation history. MAs is giving me this error when I make the request.

{
    "errors": [
        {
            "msg": "Permission denied. Scope is incorrect!",
            "code": 4002
        }
    ]
}

This is my request -

GET https://bots.kore.ai/api/public/bot/st-27d*********************************/getMessages?userId=joel***************@gmail.com&limit=10&dateFrom=2023-06-20&dateTo=2023-07-20

Headers:
auth : My_JWT_Token

I use Postman to make this request.

What is the problem?