We had a nasty little bug in one of our development stage Episerver projects. Everything ran and worked smoothly, but one day Episerver’s error logs started to report an exception regarding the Episerver.Find.Commerce module. However, the site seemed to work properly so the bug hunt could be scheduled to another day.
Things escalated when Episerver made some error handling changes in the Episerver.Find.Commerce version 10.1.1.