Looks like someone tried to pull the hose too far to fill up and broke the entire hose off the plastic connection point to the wheel where the hose is wound up.

I should have taken pics... not sure if it's as simple as just screw in another hose but maybe... there is a piece of broken plastic tube. not sure if it belongs to the hose or the connector..

If someone is going up, maybe bring a hose... as is, you can catch the water in a bucket under it.