Using NirSoft CurrPorts, I discovered that, when I start Gimp, it tries to connect to IP 8.43.85.13, which says "Application is not available" (whatever it means ).
Making some other researches, the error seems to connected to what it is discussed here:
https://gitlab.gnome.org/GNOME/gimp/-/issues/4904
Making some other researches, the error seems to connected to what it is discussed here:
https://gitlab.gnome.org/GNOME/gimp/-/issues/4904