Can't diagnose this 404 error

[kevinliao]

Hi Moz community

I have started receiving a load of 404 errors that look like this:

This page: http://paulminors.com/blog/page/5/ is linking to: http://paulminors.com/category/podcast/paulminors.com which is a broken link. This is happening with a load of other pages as well. It seems that "paulminors.com" is being added to the end of the linking pages URL.I'm using Wordpress and the SEO by Yoast plugin. I have searched for this link in the source of the linking page but can't find it, so I'm struggling to diagnose the problem.

Does anyone have any ideas on what could be causing this?

Thanks in advance

Paul

[kevinliao]

Ah never mind, found the issue.

[Christy-Correll]

That's great, Paul! What turned out to be causing this issue?

[kevinliao]

I have a responsive menu plugin which adds an optimised menu to the site for mobile. The homepage link in this was missing the http:// and that was causing the issue. I figured that because the issue was on every page of the site it had to be something with the header or footer.