I got this error:
when I close dialog box I return to desktop again.
how I can fix this?
Error in istallation
This could be due to a mirror being out of sync with recent updates. If so it should resolve itself within a few hours. You could try exiting the installer, updating the mirrorlist, and then restarting the installer. Use this command:
sudo reflector -l 15 -f 5 --save /etc/pacman.d/mirrorlist && sudo pacman -Syy
Please let me know if this does resolve itself or if we need to look at it further.