Fix server doesn't return error response for some endpoints

[neuodev]

Background

Any endpoint that is wrapped by pgSnapshotReadWrapper like txHistory or utxoAtPoint or handleUtxoDiffSincePoint doesn't not return any error response in case of invalid request or any other error case.

How to reproduce ?

Try to send any request to any of the endpoints listed above. You should not get any response and the request will be terminated after timeout.