This should be before the capacitor of the charger broke down and caused a short circuit, so the switch jumped and the room was dead.

Unplug the charger when there is no electricity, and then go to the distribution box at home to find the leakage protector in this room.

Then press the contact and push it up, and there should be electricity in the room.

Maybe this leakage protector is broken. If you can't push it up after pressing the contact, you should consider replacing it.