Outlook error InvalidAuthenticationToken

I was working with the Outlook plugin to identify my users. But it suddenly stopped working.

The service Outlook - Get User just returned an error (HTTP 401). Please contact the plugin author directly for feedback. Raw error:

{
  "error": {
    "code": "InvalidAuthenticationToken",
    "message": "Access token has expired.",
    "innerError": {
      "date": "2020-12-08T12:38:23",
      "request-id": "cd59350c-4169-4a01-8f1b-efad7d628d96",
      "client-request-id": "cd59350c-4169-4a01-8f1b-efad7d628d96"
    }
  }
}

I am currently experiencing this. Any solution?