Ho hum… They wanted me to prepare a production release today, but when finalizing one missing feature the backend returns invalid response. Well, in that case the end user needs to log in again, but as the purpose of the feature was to refresh user access to the backend without logging in again that kind of defeats its purpose. But, in the end, that's not my problem, and I was able to push the new version of the app out. Now I can head out to spend a 4-day holiday.