Two separate issues colluded to give us this bug: the error of the REST request (now in a separate process) does not pickle so needs stringifying before sending over to the original process; and we were passing in the wrong argument to get_object in the case where we delete the local key.
Two separate issues colluded to give us this bug: the error of the REST request (now in a separate process) does not pickle so needs stringifying before sending over to the original process; and we were passing in the wrong argument to get_object in the case where we delete the local key.