Got error: Cannot read properties of undefined (reading 'ieee_address')

[Tamadite]

DESCRIBE HERE WHAT HAPPENED AND WHAT YOU EXPECTED TO HAPPEN
I created a group with a remote and four bulbs. The configuration has been working in Home Assistant/zigbee2mqtt for long time. Somehow the four bulbs lost their configuration (not manageable by the remote nor by Home Assistant) and I noticed that they disappeared from the zigbee2mqtt main screen in Home Assistant. The remote seems to be left. I clicked on "Groups" under the zigbee2mqtt menu to find the group configuration and I got this error.

Current url: http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/#/groups
Previous url: http://hassio.home.local:8123/7ad98f9c_zigbee2mqtt
zigbee2mqtt: Current version: 1.18.1-1
OS ver: 6.2
HA Core ver: core-2021.8.7

Error type: TypeError
Error message: Cannot read properties of undefined (reading 'ieee_address')

state.json.txt

TypeError: Cannot read properties of undefined (reading 'ieee_address')
at t.render (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/main.7c791b396724cd5681c7.js:1:99181)
at Ha (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:918059)
at za (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:917858)
at Hs (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:958773)
at _l (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:944924)
at xl (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:944852)
at Sl (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:944715)
at fl (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:941702)
at http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:891410
at t.unstable_runWithPriority (http://hassio.home.local:8123/api/hassio_ingress/VMcywLRJ9JKeRCwVhUlxOHpnpXzL-TLMH4KD02es_Bs/scripts/vendor.d2ddf849cc03b8f1b4ad.js:2:994763)

[nurikk]

You’re using way outdated version, consider upgrading to the latest release

[Tamadite]

You’re using way outdated version, consider upgrading to the latest release

I guess you refer to Home Assistant latest version core-2021.9.4 because concerning zigbee2mqtt I'm on the latest one available on the HA Supervisor (1.18.1-1). Please confirm.

[nurikk]

Wakeup Neo :) 1.21.0 is the latest one

https://github.com/Koenkk/zigbee2mqtt/releases/tag/1.21.1