What is the problem with video in the bottom of the code? (Web)

Question

https://sololearn.com/compiler-playground/W84yE3285kXb/?ref=app

Answer 1

one problem is in the line 31. you need to delete that.
you can't add video tag inside the source and its attribute.
the other is.... how to explain:
to see more, add the controls attribute to the video tag, and it will be visible.
but the video still not playable. I think it is not shared with everybody....