Sidebar link

[nomsw]

What happened?

After Update I can Not reached the sidebar, I can Not See anything, the Web frontend Works Fine.

What did you expect to happen?

No response

How to reproduce it (minimal and precise)

Not needet ist permanently

Zigbee2MQTT version

2.9.2.-1

Adapter firmware version

7.4.4

Adapter

/dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_541831c40cc3ef11938ee2b08048b910-if00

Setup

Add-on on Home Assistant
1 SMP PREEMPT_DYNAMIC Thu Feb 12 15:31:37 UTC 2026 - 6.12.67-haos - x64
CPU: Intel(R) N100 (x3)
RAM: 3902 MB

Device database.db entry

No response

Debug log

state.json

Notes

No response

[andrei-lazarov]

What do you mean. You can access the frontend from somewhere else (where?), but not from the sidebar?

[nomsw]

Hi,
Yes I can Access the z2m over the Port 8099, But Not direcly from the sidebar.
When im at Home, Theres no Problem, I can go Direct to the frontend,
but when i Access them from outside(at work or something) I Canon reach the z2m Page
Nabu Casa let me Not Access to the frontend and the sidebar shows only cannot get(picture)
This link dont work = homeassistant:8123/45df7312_zigbee2mqtt (Sitebar)
This link work = homeassistant:8099/z2m/ (frontend, but only when im Home )

I also have Tryed to reinstall Mqtt and z2m but the same happend, Site bar only shows cannot get

What can I do to solve it
Greets

[andrei-lazarov]

No clue. For me first link works, second does not 🤷🏻 cc @Nerivec

[Nerivec]

Cannot reproduce this with latest edge.
Looks like HA began migrating some links to /app/... a while back, but they didn't update the sidebar links yet... Maybe something in your setup didn't like that?
Have you tried opening the frontend through the link in Settings>Apps>Zigbee2MQTT>Open Web UI (it uses the new link)?
Can you reproduce this with other add-ons that also have a frontend?

[nomsw]

Hi Nerivec,
Yes i tried that way, but its the Same, empty page only this two Words, Cannot get, nothing else.
Is there an config file I can edit to korrekt this link ?
Greets

[Nerivec]

Did you try a full reboot of HA (red button)?

[nomsw]

Yes I reboot the hole win11 System with Virtual Box were the ha is Running on it

[Koenkk]

Could you also try with a different browser? (e.g. on a Windows laptop)

[nomsw]

Could you also try with a different browser? (e.g. on a Windows laptop)

Its the same

[Nerivec]

Can you reproduce this with other add-ons that also have a frontend?

[nomsw]

Only the Zigbee2MQTT side link dosent work all other are Fine

[Koenkk]

Can you try to uninstall/install the add-on? (this won't cause any loss of devices)

[nomsw]

Also the App-Data or without ?

[Koenkk]

I don't think it matter, but to be sure do it without