fluxgui doesn't have a module named fluxgui (?)

[ghost]

$ ./fluxgui
Traceback (most recent call last):
File "./fluxgui", line 17, in < module >
from fluxgui.fluxapp import main
ModuleNotFoundError: No module named 'fluxgui'

[ntc2]

You haven't provided enough info here to get help: what system are you using? How did you install fluxgui?

But it probably won't work anyway: see Issue #27 for how to check if the underlying xflux program works on your system -- probably doesn't -- and then worry about installing fluxgui.