This incident has been resolved.

Airbnb is currently experiencing an elevated rate of API errors. We are monitoring the situation. See more from Airbnb here: https://airbnbapi.statuspage.io/incidents/tx6z0zm2rfmg

This is usually the case whenever Airbnb is under maintenance or is experiencing technical difficulties. Since Airbnb is partially unavailable during this time, this may affect our operations until Airbnb is back to normal.