What's the problem?

Question

https://code.sololearn.com/W0N22yw1p5zn/?ref=app

Answer 1

Rahat Hossain
you didnt included the threejs library link,

also the js codes you have copied have namespace collisions, share the source link from where you have copied the code.

https://code.sololearn.com/WQ6cokTVFSpu/?ref=app

Answer 2

You did not include the library in your program.