What is the most common reason a sump pump fails 5

https://gatewaywatermoldzone.brightsora.com/posts/why-sump-pumps-fail-lessons-from-gateway-water-mold

The most common reason a sump pump fails is a stuck or broken float switch. When debris or a misaligned cord keeps the float from moving freely, the pump either runs continuously or never turns on, leading to burnout and basement flooding.