Please can some help me out? I don't know why am getting the error and hiw to fix it.

Question

https://code.sololearn.com/WBQ5f4u6gge7/?ref=app

Answer 1

Mishin870 thanks bro i appreciate alot

Answer 2

Your problem is that the element #wss is loaded after you get it through document.getElementById(). So it is null.
Working version: https://code.sololearn.com/WcUZJDToJe1L/#js