There is no electricity when the light is turned on in the bathroom at home, and I can't understand the switch. People who are eager to know can help me see what the problem is.

The handles (blue handles) of these circuit breakers in the switchboard are closed upwards and opened downwards. Obviously, the 2P air switch at the bottom of your switch box, the penultimate 2P leakage circuit breaker and the 1P air switch at the top have tripped. When the load is connected, the air switch trips, indicating that the load is short-circuited. Turn off the switch of the fault light in the bathroom first, and then try to eliminate the fault. After troubleshooting, push the handle of the circuit breaker (be careful not to touch the screw on the switch) in the disconnected state to restore power supply.

So many circuit breakers trip at one time, it is estimated that there is an over-step trip. You can close the main switch to restore the power supply of other circuits in your home, and finally close the circuit breaker closest to the fault point after troubleshooting.