Router pairing issue - "TypeError: Cannot read property"

[szporwolik]

Bug Report

Pairing a router Ikea Trådfri outlet is a reason that zigbee2mqtt cannot start.

What happened

After pairing with the router, I cannot start zigbee2mqtt anymore.

What did you expect to happen

zigbee2mqtt working started and working

How to reproduce it (minimal and precise)

I have zigbee2mqtt runing inside docker at Synology NAS; containter was created using:
sudo docker run -it -v /volume1/docker/zigbee2mqtt/:/app/data --device=/dev/ttyACM0 --privileged koenkk/zigbee2mqtt:latest

After creating a clean container everything works fine - zigbee shepard is started and I can start pairing devices.
While pairing metioned Ikea outlet (It happened with CC2531 router as well) everything looks fine untill, but the following error comes:
TypeError: Cannot read property 'size' of null
Full log: https://pastebin.com/NVuQAgqe

Next I'm not able to start the containter anymore: https://pastebin.com/dr35YNgB

configuration.yaml https://pastebin.com/UUeEZiwg
database.db https://pastebin.com/kwhArLnb
state.json https://pastebin.com/p2icHWih

The only way to fix is to complete clean image/files and repair again (then situation repeats).

Debug Info

zigbee2mqtt version: 1.5.1
CC2531 firmware version: CC2531_DEFAULT_20190608.zip

[szporwolik]

Update: pairing with IKEA router generate similar issue https://pastebin.com/uY1nxNEH

[szporwolik]

Repairing log (with clean database.db, otherwise it does not start) with DEBUG: https://pastebin.com/PGmjrQK0

[Koenkk]

Your configuration.yaml defines whitelist: null, change it to whitelist: [] or remove it completely.

[szporwolik]

Hello , thank you @Koenkk - yes, I can confirmed, this was the configuration issue. Thank you for information.

What is happeing, if someone will put the lines:

whitelist:
blacklist:

during execution those lines are replaced with "whitelist: null"; with such change zigbee2mqtt is not starting after restart.

It's not a big issue, but as in example HA is OK with putting empty nodes I would consider this to be a bug/feature request, so nobody will have similar troubles like myself.

Anyhow, my case is closed - thank you! 👍

[Koenkk]

Will be set to empty array when null now, thanks!