ZHA errors every few days

Unfortunately, no… I replaced all of my wall switches withe z-wave switches rather than the bulbs (also way less confusing for others).

With that many bulbs I would spend some time trying to figure out the zigbee stuff. Here’s what I would do:

remove the smartthings plug from your system (i.e., do a zha.remove) and see how it goes for a few days, if it still happens, remove the other plug, then repeat. until you find the problem child. I suspect the SmartThings plug, only because the my troubles were with all smartthings devices as well.

I’m not sure what else I can tell you… it sucks. There’s a thread on here for zha working devices, maybe ask there?