Check the ports too. Presumably openhabian does this automatically, but you’ll have to change the zigbee2mqtt front-end port, as the 8080 will clash with openhabian’s.
Assuming nothing else is taking up that port: I found that if zigbee2mqtt is not connected to the MQTT broker then the front end will not load. Have you confirmed that zigbee2mqtt is communicating with your MQTT broker?
You may want to start consulting the zigbee2mqtt logs to find out what is happening.
I was testing and searching a bit and found following in the logs:
info 2023-01-03 18:01:47: Logging to console and directory: '/var/log/zigbee2mqtt/2023-01-03.18-01-47al' filename: log.txt
info 2023-01-03 18:01:47: Starting Zigbee2MQTT version 1.29.0 (commit #dddce571)
info 2023-01-03 18:01:47: Starting zigbee-herdsman (0.14.83)
error 2023-01-03 18:02:08: Error while starting zigbee-herdsman
error 2023-01-03 18:02:08: Failed to start zigbee
error 2023-01-03 18:02:08: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start.html for possible solutions
error 2023-01-03 18:02:08: Exiting...
error 2023-01-03 18:02:08: Error: Failed to connect to the adapter (Error: SRSP - SYS - ping after 6000ms)
at ZStackAdapter.start (/opt/zigbee2mqtt/node_modules/zigbee-herdsman/src/adapter/z-stack/adapter/zStackAdapter.ts:103:27)
at Controller.start (/opt/zigbee2mqtt/node_modules/zigbee-herdsman/src/controller/controller.ts:132:29)
at Zigbee.start (/opt/zigbee2mqtt/lib/zigbee.ts:58:27)
at Controller.start (/opt/zigbee2mqtt/lib/controller.ts:101:27)
at start (/opt/zigbee2mqtt/index.js:107:5)
I went to that page:
and rerouted o that site:
My ZigBee Adapter is a SmaBit Bitron Adapter. Based on a Silicone Labs EM3587.
Quote from the site:
Initial development started on experimental (beta stage) support for Silicon Labs based Zigbee adapters. This includes all EM35X, EFR32MG12, EFR32MG13, EFR32MG21, EFR32MG24 SoCs/Modules families with Silabs EmberZNet NCP 6.7.8 firmware or later via EZSP version 8 (EmberZNet Serial Protocol) interface.
I dont know what firmware my adapter is using. How to find out?