Web Reference: If a field has an object type but you return something other than object in its resolver (like a String or an Array), you will not see any error about the type mismatch but the child fields for that field will inevitably resolve to null. Feb 3, 2023 · Starting with @apollo/gateway: 2.3.0, returning null from a __resolveReference adds an error to the graphql response even when the type is declared to be nullable in the relevant subgraph. Learn how to fix the `Cannot return null for non-nullable field` error in your GraphQL API by following this step-by-step guide. You'll find explanations, co...
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