For the last 3 hours I have been researching my problem, here and via google, including RTFM.
- usb-ITead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_ec4c7c94ef1bef11b310a1d94909ffd0-if00-port0
- roller blinds WM25L-Z Smartwings
It was working for a while, the connection got lost.
Tried factory reset on blinds and did not pair, apparently because there was already an entry for it in Z2M (yes, many restart HAs)
Tried to delete entry in Z2M. After more restart HAs entry was gone from HA but still on the MQTT broker (per MQTT Explorer)
Tried re-installing Z2M, deleted Z2M, HA restart, eventually, related topics were not on MQTT broker
Tried to install Z2M
Starting Zigbee2MQTT without watchdog.
[2025-12-16 20:02:37] info: z2m: Logging to console, file (filename: log.log)
[2025-12-16 20:02:37] info: z2m: Starting Zigbee2MQTT version 2.7.1 (commit #unknown)
[2025-12-16 20:02:37] info: z2m: Starting zigbee-herdsman (7.0.4)
[2025-12-16 20:02:37] info: zh:zstack:znp: Opening SerialPort with {"path":"/dev/serial/by-id/usb-ITead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_ec4c7c94ef1bef11b310a1d94909ffd0-if00-port0","baudRate":115200,"rtscts":false,"autoOpen":false}
[2025-12-16 20:02:37] info: zh:zstack:znp: Serialport opened
[2025-12-16 20:02:37] info: z2m: zigbee-herdsman started (resumed)
[2025-12-16 20:02:37] info: z2m: Coordinator firmware version: '{"meta":{"maintrel":1,"majorrel":2,"minorrel":7,"product":1,"revision":20210708,"transportrev":2},"type":"ZStack3x0"}'
[2025-12-16 20:02:37] info: z2m: Currently 0 devices are joined.
[2025-12-16 20:02:37] info: z2m: Connecting to MQTT server at 192.168.sss.aaa
[2025-12-16 20:02:37] error: z2m: MQTT failed to connect, exiting... (Missing protocol)
[2025-12-16 20:02:37] info: z2m: Stopping zigbee-herdsman...
[2025-12-16 20:02:47] info: zh:controller: Wrote coordinator backup to '/config/zigbee2mqtt/coordinator_backup.json'
[2025-12-16 20:02:47] info: zh:zstack:znp: closing
[2025-12-16 20:02:47] info: zh:zstack:znp: Port closed
[2025-12-16 20:02:47] info: z2m: Stopped zigbee-herdsman
I see the error message:
[2025-12-16 20:02:37] error: z2m: MQTT failed to connect, exiting... (Missing protocol)
did
b:~$sudo apt-get install mosquitto mosquitto-clients
Reading package lists... Done
Building dependency tree
Reading state information... Done
mosquitto is already the newest version (1.6.9-1).
mosquitto-clients is already the newest version (1.6.9-1).
The following packages were automatically installed and are no longer required:
libbsd0:i386 libx11-6:i386 libxau6:i386 libxcb1:i386 libxdmcp6:i386 libxext6:i386 libxtst6:i386
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
and
b:~$ mosquitto -h
mosquitto version 1.6.9
mosquitto is an MQTT v3.1.1 broker.
What did I miss?