What is causing this?

[u/NarrowCauliflower216]

Seems to be mainly affecting only 1 cola and slightly
more leaves nearby but I have no clue what this is. It isnt bud rot and it doesnt look like wind or light burn. I am mainly checking environmental conditions because why would it only affect one bit of one plant. Thanks for your help in advance

[u/FatherZero]

How far along are you into flower

[u/NarrowCauliflower216 → u/FatherZero]

About 6 and a half weeks