Your shaft is partially collapsed . Take it out and there are what looks to be plastic pins through the flat area . Get that plastic out by what ever means I use heat and poke them out after softening them. Then realign the holes on the inner and outer shaft by tapping it back or forward. Fill the hole back in completely until it comes out the other side with JB weld Quick wrap it with masking tape so it doesn't ooze out and let it harden overnight. Do not hit on the wheel hard when installing it as this is probably what happened to it originally.