My family bathroom basin and the following cabinet to connect the gap, out of the water! Solve!
There are two copper joints in the faucet, which are connected to the faucet, one side under your marble and stuck with a hoop nut.
The reason for the leakage of water is that the copper joint below the faucet is loose. Close the main valve, remove the faucet, you can see the copper joint. Remove the joint. Tighten with a waterproof tape and then tighten.
The connection is not strong to cover the gap with glass glue on the line to check whether there is a leak on the waterline
