Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail

https://sergiodvlf610.wordcanopy.com/posts/common-residential-gate-problems-and-how-they-re-fixed-safely

Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail, tracks shift out of line, or the operator needs a reset after an obstruction is cleared.