Image with material is not render

Hello,

I am trying to make a mini map in my game, the mini map works on a image with a render texture and a culling mask, although this has me coming across an issue, when I make my image in world space it renders fine, works fine, but when I apply it to a image in a canvas with world space, I am getting the issue of it not rendering. It appears in my scene window but not in my game window. I have been using it on a world space canvas at the moment attached to the camera, witch works, but doesn't scale. So any ideas on how I can handle this would be appreciated.