nicktheplumber
The problem is that you really don’t know for sure where the leak is coming from. It could be from the underpan drain connections or it could be from leaks through the shower wall/pan junction, or even from the supply line to the shower head above the diverter valve. There are various ways you could logically determine just where the leak is, but you really have to understand plumbing to do so, and if you did, you wouldn’t be asking this question in the first place.
NtP
