No communication NSPanel(Lovelace UI) to Home Assistant

Configuration Frontend
1

Hello,
I’m new in Home Assistant. I set up a new system regarding the very good manual. The reason for this setup is the integration of NSPanel. I flashed it with tasmota and then with Lovelace UI.
All installation steps are succesfully, protocol entries are without failures, but the display ist waiting for content … The only failure in MQTT broker ist:

New connection from 192.168.178.61:61897 on port 1883.
Client <unknown> disconnected due to protocol error.

Do have anybody an idea whar I configured wrong?

2

After 3 days of configuration I noticed an error in “topic”. There were a difference between tasmota MQTT config and apps.yaml.