You need to add http:// or https:// in front of your link, or else HTML thinks it needs to open a page on the current website.
Instead of http://www.yourwebsite.com, enter http://www.yourwebsite.com or https://www.yourwebsite.com
Ok. So I found out what I was doing wrong, thanks for helping me out. Since I'm not a coder, I thought this error meant that the comment is not accepting https or HTTP, and so I removed it. But after reading your answer and this error again, I figured out that there was an error with the code.Yeah, there was an error in the href codeWhat is the URL in the browser when it displayed 404 page?
If it's your site, then there is a problem with your site and has nothing to do with the link. If it's the same blog, then there is a problem with your href code.
Use the standard a href tagYeah, there was an error in the href code
<a href="https://www.blackhatworld.com/">BlackHatWorld</a>