Leak on front passenger side

Leaking from the inside, could be from a blocked cowl drain. Open the hood and check below the windshield for leaves and debris.

im looking right now. but cant see any debris or leaves. any other solution for this? is there a possibility that leaves or debris got inside the drain where i cant see it. thank you

look it up on utube

my friend is having same problem 2016 chevy colorado wet floor when rains gotta be draining issue??