Thin white lines on my macbook air screen

Starting last night there are thin white lines on my macbook air screen. I've had this laptop since 2020 and this has never happened before.

I turned it off last night to let it cool down and there's no visible damage to the screen like a crack so I'm at a loss.

I've attached a photo but it's not the best (don't look at the actual screen on the photo, but the white part to the right.)