fix(gateway): Remove path
, query
and variables
field from subgraph error responses
#900
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Queries and variables coming from the gateway down to subgraphs can contain sensitive information that shouldn't be passed back to the client. Currently this can happen when an error occurs during a gateway fetch to a subgraph, and those errors are subsequently returned to the client in the response's error extensions.
We should just remove these fields. There is more discussion to be had around returning error information of this sort at all, but for now this is a sensible first step and prevents leaking potentially immediately sensitive information.