Check that floor area

[M5Rick]

Rainy season is here so check the passenger floor area front and back and if it is wet then you probably have a u/s yellow bulkhead plug. Mine failed and just duck taping the drain area in front to the left of the w/screen will stop water ingress with a soak up sponge on top of the tape.
Getting to the blank is not easy from the inside of foot well, what you want to do apart from replacing and re-sealing the new blank is to smash the collector behind it that collects water when the drain tube below it gets blocked with debris weakening the yellow plug when it fills up.