Error connecting to (inter alia) deCONZ

I lost connection to some devices tonight, including the ones connected through my Conbee. I see these error messages:

This is what the deconz error says:
Logger: homeassistant.components.deconz
Source: components/deconz/
Integration: deCONZ (documentation, issues)
First occurred: 16:41:37 (148 occurrences)
Last logged: 20:01:04

Error connecting to deCONZ gateway at core-deconz

Any tips on how to fix this?