Most likely, the leak usually stems from somewhere within the condenser. The condenser unit contains the main heat exchanger system that cools down hot, vaporized refrigerant back into a liquid, which will in turn be heated back into a gas in an endless cycle.
Broken Condenser Pump
One of the most common causes of a leaking AC is a broken condenser pump, which is responsible for getting rid of water condensate that forms in the condenser unit. An efficiently working pump should drive the condensate into a safe environment for dumping, and not around the AC unit inside your house.”