I will try to describe it in English.
The problem started when I uninstalled the last modpack and then tried to reinstall it. As I wrote earlier,
it shows an error of incompatibility of the game version with the package. No other mods, "res mods" folder is empty.
Perhaps a new installer package 1.20.0.4 instead of 1.20.0.1 would solve the problem, I don't know.
File integrity checked, directory and path are correct.