exphost » exphost-controller

using mutation groupRegister without valid token result in 401 in userservice,
and error:

"errors": [
    {
      "message": "gateway.schema_group.Group() argument after ** must be a mapping, not str",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "groupRegister" 
      ]
    }
  ],

need that message to be meaningful