Just moved into a rented apartment and find out leakage under the bathroom sink. It was previously stucked with paper to prevent leakage. I cleaned it up and wrapped with waterproof tape, but water still leaking from the tip of that nail labeled in the red circle. May I ask if there is any way to seal/ fix this as a temprary workaround? Since I'm no plumper to investigate inside the covered part in the sink (built-in in the wall). Any advise would be much appreciated. Thank you so much in advance!
