What should I do if the spotlight leaks in the hotel aisle?

You can use a multimeter with a resistance range of 200M to check the insulation resistance of the lines, and first determine which line is leaking or which two lines are short-circuited. The method is as follows,

Measure the insulation resistance of live wire and zero wire, live wire to ground wire and zero wire to ground wire.

Knowing which line is missing, we are gradually narrowing the fault range by subsection search.

Or use the elimination method to separate the lights from the middle and then send electricity. This is what I call subsection search.