Settings showing red dot after ios 15

After updating to ios 15, my settings app shows a red dot with a 1, inside there's a message saying my iPhone storage is almost full. When I try to click on it, nothing happens.

i deleted many photos and apps and now I have 40GB free, but the message doesn't disappear.

I have also restarted the phone 2 times after deleting stuff, it doesn't dissapear nor work if i click on it