Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale.

this is the only other problem i have come across on this, my first attempt at using ubuntu, i saw this message every time i ran a gog game installer using the sh command

i installed ubuntu using the live cd and set the language to uk english

is this normal?

i followed the steps in the second answer here which didn't fix the problem, maybe i did something wrong? i didn't try the steps in the first answer yet because it seems to require more advanced knowledge of linux