So I finished tracing some line art on krita that i had recently done on paper.
However my attempts to apply it only end in this error.

Sorry! G'Mic failed, reason:*** Error in ./gimp_colorize_interactive/*if/*repeat/*substitute/ *** Command '-x_colorize': No display available.

I don't know what this means obviously but whatever it is it's preventing me from colouring my line art.

*The settings i used for G'MIC were-
Black and White
Colorize (interactive)
Input type: Lineart
Output type: Image + Colors (2 layers)

*That's all the changes i made since i was following this tutorial: https://www.youtube.com/watch?v=YigbVY9s6gU

Any help is appreciated thank you for your time.

Try the latest beta: http://download.kde.org/unstable/krita/3.0.91/

Not sure i understand what anything i downloaded from this link is. I see a whole bunch of files but no krita anywhere...