Codechef solution submission are not opening in brave browser while the same is visible on chrome

as you can see here the page is not visible.

I am able to open it even with the shields up. Did you try with the shield down? Can you also open the console and show us what error does it throw?

how to access the console?

Cmd + Option + J (on a Mac) or Ctrl +Shift +J (on Windows/Linux)