[Bug] "No Devices Found" on Admin page

[Automate1]

Which surface(s) does this affect?

• Web dashboard
• OpenNova mobile app (Android/iOS)
• Novabot stock app (Flutter, third-party)
• Admin page
• Server backend (MQTT, DB, API)

Which app are you using?

Novabot (stock) — Android

App version

2.4.0

OpenNova server / docker release

v2026.0526.1458

Where is the OpenNova server running?

Raspberry Pi

Mower serial number (SN)

254

Mower firmware

v5.7.1

STM32 firmware (optional)

No response

Charger firmware (optional)

No response

What happened?

Got this page after leaving a browser tab on OpenNova Admin page for a long time

Logging out and back in fixed the problem

Steps to reproduce

Leave Admin page up a long time

Expected behaviour

Message to tell you to login again.

Logs (mower, server, app)

Screenshots / video

No response

Pre-flight

• I searched existing open + closed issues for duplicates.
• I redacted any secrets, JWT tokens, or full email addresses from logs.