Replaced battery now bottom of the screen acts unresponsive

Hi all,

Yesterday i replaced a iPhone SE battery. Everything went well but after putting everything back in the screen works, except for a small piece of the bottom. Its right at the place where the spacebar is located etc. The screen is original.

I've took everything out en back in like 10 times but it still wont work. Rest of the screen is working perfectly. What could be the problem did i damaged some kind of flex cable? must say the battery fitted really tight between the frame en logic board, could that be the problem, cause i cant remember if the original battery fitted that tight as well.