Issue with fragments (An item with the same key has already been added.)

[omelhus]

Hey,

The following query fails and returns an error message.

fragment Product on Product {
  productNo
}

fragment Prod2 on Product {
  __prodNo: productNo
}

query IssueWithFragment($cid: Int!) {
  useCompany(no: $cid){
    product {
      items {
        ...Prod2
        ...Product
      }
    }
  }
}

The error response

{
  "errors": [
    {
      "message": "An item with the same key has already been added. Key: productNo",
      "path": [
        "useCompany",
        "product"
      ]
    }
  ],
  "data": {
    "useCompany": {
      "product": null
    }
  },
  "extensions": {
    "vbnxt-trace-id": "0000000000000000957e21d6f252d971"
  }
}

I'm guessing that a an Add should be changed to TryAdd.

[Marius Bancila · Accepted solution]

The fix for this error has been deployed to production.

[omelhus]

Thank you!

[Marius Bancila]

Thanks for reporting this. It's something along the line of what you mentioned. I'll look into fixing this!