Tube broke at point where front left hinge attaches.

Another view of the break.

Wider view of the break.

This is what the front left unbroken side looks like.

I cut a 4" piece of conduit in half, shaped it around the tube to adjust the radius, and attached it with hose clamps.

Another view of the repair.

Front view of the repair. That lower clamp will interfere with the hinge so I will turn it around.

Fully assembled repair.

Done!