What’s the problem??

Hey there, bro! 👋 No need to worry if it's in the lower part of the plant! Keep growing! A deficiency of elements in the lower parts of the plant is a normal situation for your flowering stage! 👌 Just don't help the plant get rid of that foliage! The plant will drop the leaf itself when it's no longer needed. Your job is just to pick it up from the floor and take it out of the growing area! 👌 Good luck, my friend! ✊😇