This is a screenshot of the error that I am getting.
And here is the page where I am getting the error.
It tells you that the element you expect is not there (property ... of null) since null is returned when getElementById() fails.
property ... of
I know the problem @Dormilich but I want a solution.
Thank You Guys but I found a solution myself it was due to CloudFlare rocket loader
use an element that exists?
I don't know your code, so I can't tell what's wrong except what the error message tells me.
The error was caused due to Cloudflares rocket loader and I have disabled it, So everything is working fine now.
Thanks A lot for Your Precious Time.