Dne pá 3. srpna 2018 andre_debian@... napsal(a):
> Hello,
>
> Since I have reinstalled a Debian on another pc,
> when I click in the Trinity menu, configuration, network,
> I receive this graphic message :
> "The configuration can not be loaded,
> an unexpected error occured".
>
> The network works fine, the network card is recognised,
> on enp0s25.
>
> How to obtain an correct answer from the configuration network ?
> (as before, capacity to configure the network graphically).
>
> Thanks,
>
> André
>

Please try to install the net-tools package.

Cheers
-- 
Slávek