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Why is my GraphQL query returning null or missing fields? #4403

Closed Answered by codecraze25
hadez0528 asked this question in Q&A
Why is my GraphQL query returning null or missing fields? #4403
@hadez0528 hadez0528
May 20, 2025 · 1 comment
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hadez0528
May 20, 2025

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Answered by codecraze25 May 20, 2025

This usually happens because the resolver for that field is not implemented correctly or is throwing a silent error. In GraphQL, every field is resolved individually. If a resolver fails silently, GraphQL will still return the rest of the query, but the failed field will be null.

query {
  user(id: "123") {
    name
    email
    age
  }
}

If the age resolver throws an error internally (e.g., a type mismatch or a database error), the response might look like:

{
  "data": {
    "user": {
      "name": "Alice",
      "email": "[email protected]",
      "age": null
    }
  },
  "errors": [
    {
      "message": "Cannot return null for non-nullable field User.age",
      ...
    }
  ]
}

Ti…

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