Zigbee keeps crapping out :-(

for the last couple of days my zigbee network kept crapping out and then coming back some time later for no apparent reason, but now i’s been down for quite some time. all my zigbee devices are unavailable. why is it doing that? is there anything i can do to find out what’s wrong?

i use home assistant on an rpi 4 with 8 GB. sonoff zigbee dongle and ZHA.
my main computer runs ubuntu.

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