Shopify/active_fulfillment — pull request #39 by kitt (2014-07-08 18:15:44+00:00)
Title: Fail fetch_stock_levels when stock_level retrieval via tokens fails mid-process

Receiving the exception "NoMethodError: undefined method `stock_levels'" when requests to Amazon fail retrieving stock levels using tokens. This fails the whole request, instead of throwing an exception in the middle.