Broken Links on Phantom Pages

Hi Everyone,

I recently ran a report to determine broken links on our website (www.worldviz.com). It pulled a bunch of broken links for pages that don’t exist anymore. A lot of these pages were the built in templates that came with WebFlow that I removed.
Also want to note that this report did not pull these pages a few months ago when I ran it.

Here is a link to an example of the source code it shows: Broken Link Viewer - Web Site Map - check your website for dead links!

Another strange thing, is that it is saying there is Facebook Pixel in that code, which there is not.

I would like to fix this because it does affect our SEO. However, I cannot determine how to fix this on phantom pages. Anyone have any thoughts?

Thanks!