Dialyzer error - trying to handle :error responses with multiple values in the error tuple

Questions & Help Questions
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(assuming that do_generate and the handle_response from your initial post are in the same module)

Dialyzer is telling you the {:error, _, _} branch in handle_response can’t be reached because create_completion’s return type matches Client.handle_response ({:ok, body()} | {:error, term()})

As shown, Client.handle_response will crash if Client.post returns {:error, _, _}, since it doesn’t have a matching clause. You’ll likely need to update:

  • the definition of result in Client, if it doesn’t include the 3-tuple case already
  • the return type for Client.handle_response, if you want to handle the 3-tuple case in the caller instead of in Client