Leak from bottom of fridge

Two things might be happening. One is the line to the fridge is leaking, this line come thru the floor or wall to the bottom and hooks up to a water valve, it may just need tightening. The other problem is you will have a hose that runs from the filter down in behind the crisper drawers to the bottom and coils up here to hold water for cold use. it then runs thru the bottom pan out to the front, to the bottom door hinge on the freezer side up the door to the dispencer. Check along the hose for a pin hole look at the bottom hinge area first, things bump into it here and can damage the plastic cover.