Knx don't work correctly

Hi everybody! i install homeassistant on HassOS 3.12 Deployment production on a pi 3B+
i want to connect ha on my knx installation. For this i try to install xknx library with but it’s don’t works.
i try to make a symbolic link to xknx.yaml but it dissapeared each time i reboot.
When i try to declare path of this file directly, (config_file: ‘/root/xknx/xknx.yaml’) don’t work anyway
have you un idea to help me please?
(xknx find m’y installation on a another ubuntu configuration)

You don’t need to install the library, it’s already included in Home Assistant. Take a look at the knx docs here to set it up

thank for your reply.
i have already try this but i will retry