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When we use a GraphQL API there are two kinds of errors we may encounter: Network Errors and GraphQL

     

       
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Errors from the API. Since it's common to encounter either of them, there's a

     

       
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[`CombinedError`](../api/core.md#combinederror-class) class that can hold and abstract either.

     

       
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[`CombinedError`](../api/core.md#combinederror) class that can hold and abstract either.

     

       
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We may encounter a `CombinedError` when using `urql` wherever an `error` may be returned, typically

     

       
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in results from the API. The `CombinedError` can have one of two properties that describe what went