Pic upload won't work for me


So, hello. I think I need some help cause I really can’t solve the problem.
Even trying from another computer and connection, the errors keeps show.
But let’s start from the being.

I’ve tried to change my dp and, apparently, from the timeline, It loads.
But when I enter the settings, it isn’t updated.
so I’ve tried to delete the picture but the “Internal server error” message keeps showing from 3 days.
So i uploaded the pics from the panel and nothing, it won’t load, still "internal server error"
I’ve changed pc, connection, and still nothing,
thinking it was a problem twitter-related I waited but trying with a new account, the pics show and I can change it, it’s just for my main account that won’t load. someone can help me to solve this? thank you.