Do you know if there are links on your site that do not lead to anything? It is easy to check. Just go to
and enter your website address like this:
Be sure to select “Report all occurrences”. When it is done, you will see results like this if you have any broken links:
When you click on the blue “url” in the “Page where found” column, it will take you to the page that has the bad link. If you click on “src” it will show you in the code where the problem is.
Try to correct all the problems until you get this when you run the test: