It may also be a low power issue.
If it's a Swintek slide, try the reset, it should allow it to be retracted.
Press reset button six times, on seventh press, held button in until red and green lights start flashing, release button, wait until they stop. Try the slide.
Thanks guys, This RV is a brand new 2020 and the module is dead after only 7 times of bringing in and out. I had to call an RV repair, while he didn’t have this module he took the one out of kitchen switched it with bedroom and brought the bedroom back in so I can continue with my travels.