It is easy to fix....but dangerous if you don't know about the spring loaded ends. You will need help on a long awning like you have. Stabilize, restrict the springs from motion. Disconnect the arms from the roll ends and lay the arms out on the ground. take the retaining screw out of the awning rail and slide the roll out that end. This is where your friend/helper comes in. If you have t, spray a little silicone lubricant into the now empty rail. Inspect the awning for damage and if OK....slide it back into the rail and reinstall the retaining screw. Swing the arms up and reattach if the spring was restricted as mentioned. WARNING!!!the spring getting away has caused severe injury and finger/thumb loss to careless installers. There is a reference to A&E/Carefree awning manuals on the WEB.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."