Leak below shower....help!!!!

[To Gulls]

I thought this was coming from the door but now I am not so sure? How to find source of leak?

[KJRitchie]

Can't really decipher the photo.
My shower leaked to the floor and it was the plastic flashing surrounding the inside of the shower door frame that was allowing water to leak down to the hallway floor. If the shower drain is leaking then the water would drip through the drain pipe hole to the belly pan. Mine was leaking slightly too. I accessed it through a heating vent in the front bedroom. Tight squeeze. I was able to unscrew the pipe and found a flat rubber washer. Not a good design. I eventually used some clear silicon on the flat washer and seems to have fixed that leak. The shower faucet could be leaking. Open the access panel in the wardrobe to see any evidence. Are there any cracks in the shower floor pan?

Kelvin