Trying to install mysensors

Hi, i just installed HA core on a pi5 (raspbian OS)
I would like to install Mysensors, but I got :
Config flow could not be loaded: 500 Internal Server Error Server got itself in trouble

What’s the pb ?

Thank you.

I had to move to ESPHome because I was constantly having problems with MySensors in HA.

I know; not helpful to your problem. :frowning:

Thank you.
I format my ssd installation and install homeassistant OS.
Now all is working fine for me.