Error during adding integration

[Meenzer-Peter]

Hi,
after downloading Sigenergy ESS Version v.1.2.1 over HACS and adding the integration I'm getting the error "Invalid handler specified". Could anyone help me!

[TypQxQ]

Hi @Meenzer-Peter — "Invalid handler specified" almost always means Home Assistant hasn't fully loaded the integration after the HACS install. The fix is usually straightforward:

1. Fully restart Home Assistant (not just a reload/quick restart) — go to Settings → System → Restart
2. Once HA is back up, try adding the integration again via Settings → Devices & Services → Add Integration

If the error persists after a full restart, it would help to check Settings → System → Logs for any errors related to sigen or sigenergy around startup time, as that would indicate a loading problem. Feel free to paste any relevant log lines here.