Screenshot: https://snag.gy/wdok4O.jpg
So I had just plopped down Pyanodons roboport from the Pyanodons industry mod and loaded the custom roboports with the py bots maybe a minute or so before that bug was triggered. I believe a bot was deployed to grab a defunct mining drill (auto-deconstruct mod) and there was no logistic storage chests built/placed yet at the time this bug surfaced. Hope this helps, thanks!
That's a bit annoying. I fixed this bug in the previous version, but I downloaded the wrong version to make the latest update. Anyway, I can fix this in no time.