Can Not Integrate GoodWe Inverter Into Homeassistant

I have installed homeassistant 2024.8.0. I want to add the Goodwe Inverter GW10KN-ET, firmware version V1.1.3.10, ARM firmware version 23.237, DSP firmware version 09.163, which is connected with my WLAN. I browse to http://<my_home_assistant>:8123/config/integrations/dashboard and click on “add integration”. Then I enter “GoodWe Inverter” and its IP address. And that results in “unknown error occured”. What am I doing wrong?