React: Use React to Render Nested Components Issues

I am attempting to complete the front end libraries React: Use React to Render Nested Components, however, every time I enter anything the lesson freezes and states this error: “Aw Snap! Something went wrong when displaying this page.”. I have attempted restarting my computer several times, completed hard refreshes and my internet connection is fine. Has anyone else encountered this issue by chance? If so, how were you able to fix this?