Can't render models to canvas

The first time you try to render models to a canvas, it most likely won't work.
Instead of using love.graphics.setCanvas(yourCanvasHere), use love.graphics.setCanvas({yourCanvasHere, depth=true}).
This depth=true setting allows 3D models to be rendered on the canvas.

Most of the time when working with canvases, you want to clear your canvas after it's set. If you are still having problems, try doing love.graphics.clear(0,0,0,0) after setting your canvas to be active.

The depth=true setting was added in Love 11.0, and is documented at the bottom of this page.