I just installed Z-wave JS UI in order to configure a Z-Stick 7 to operate as my Z-wave hub (per instructions Setup Home Assistant with Z-Stick 7 and Z-WaveJS UI : Aeotec Help Desk](Setup Home Assistant with Z-Stick 7 and Z-WaveJS UI : Aeotec Help Desk).
After installing Z-wave JS UI and starting it up, I click on Open Web UI. Then I receive the message “Error while loading page app.”
I checked the Supervisor logs from installing Z-wave JS UI, and found:
2026-08-08 15:24:34.746 ERROR (MainThread) [supervisor.apps.app] App Z-Wave JS UI exited with non-zero exit code 137
And the Z-wave app’s logs included:
2026-08-08 15:27:02.087 WARN STORE: scenes.json not found
2026-08-08 15:27:02.090 WARN STORE: nodes.json not found
2026-08-08 15:27:02.093 WARN STORE: users.json not found
2026-08-08 15:27:02.112 INFO APP: Listening on port 44920 protocol HTTP
2026-08-08 15:27:02.258 INFO MQTT: MQTT is disabled
2026-08-08 15:27:02.261 WARN BACKUP: Store backup is disabled
2026-08-08 15:27:02.263 WARN BACKUP: Nvm backup is disabled
2026-08-08 15:27:02.269 WARN Z-WAVE: Z-Wave driver not inited, no port configured
[15:27:02] INFO: Starting NGinx…
Finally, my HA install:
Home Assistant Core: 2026.8.1
Home Assistant Supervisor: 2026.07.5
I really appreciate you for reading thus far. Hope to find the solution from some brilliant person out there 