@flygpagen
There is no Python section, the python is used in the [mlat] section.
The mlat command line in file /etc/rbfeeder.ini has wrong python version number i.e. python3.5. This works for Stretch, but fails for Buster. As now everyone uses Buster which required python3.7, manually enabling this line will result in failure of mlat. Leave it commented-out (i.e. leave the # at it's start)
The correct mlat command line with python3.7 is built into the rbfeeder, so you dont have to do anything, just leave mlat command line commented-out (i.e. let # stay at it's start).