This prompt indicates that the thermistor of the hot bed has detected a short circuit, possibly due to a wiring problem or damage to the thermistor itself.
Check the wiring: Check the wiring of the hot bed thermistor to ensure that the wiring is intact. If the thermal wire is damaged, try to repair the damaged part and check whether it is restored to normal.
Replace the thermistor: If the wiring is normal but the problem persists, you may need to replace the thermistor.
Check the cables to the hot-bed thermistor to ensure that there is no damage or short circuit.
If cables are damaged, repair them and check whether they are normal.
If cables are connected properly, replace the thermistor.
Restart the machine and check whether the fault is rectified.