So I was trying to run the auth example from github, but whenever I want to invoke the signUp mutation I get this payload instead

{
  "data": {
    "signupUser": null
  },
  "errors": [
    {
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "signupUser"
      ],
      "code": 5000,
      "message": "A function returned an unhandled error. Please check the logs for executionId 'ap-northeast-1:simple:cj9eivmjjwt5l01737giscvf4'",
      "requestId": "ap-northeast-1:simple:cj9eivmjjwt5l01737giscvf4"
    }
  ]
}

did you check the logs for this function?