I’m having the same issue with my used 2017 Nissan Leaf. It didn’t charge overnight and when I tried to charge it again I heard the clicking sound and saw the flashing lights. The car quit charging, but when I removed the EV charger from the car and reinserted it the car began to charge, but the blinking and clicking continued for awhile. Eventually it stopped and the car did charge overnight. Does this mean I need a new charger?