Issue with 'Homepage' (Week 8)

Almost at the end of this great course.

I've just submitted my second pset for Week 8 on HTML, CSS and JavaScript, and got an unexpected 8/9 score for reported failure on the 'each page links to at least one other page' criterion.

I know this still puts me above the 70% passing theshold, but I would like to understand this.

My webpage has five different pages: index.html and four other html pages. Each html page actually does link to all others, in index.html on the body of the page, in the others on their footer. I linked using <a href = </a>. The addresses that I used to link to are the ones from my homepage directory.

I tested both on a regular browser and on mobile and all the links work perfectly fine.

So, does anyone have any idea why I got this? Do styles.css and specification.txt also need to link to another page? Should I use a different linking method? Could the issue be because links are mostly on footers? Any other thoughts?

Thanks in advance.