Do you use a hashtag or pound sign in your URL. For example the link URL is simply a hashtag or pound sign, one of these #. What should Google do with them? The URL would look like <a href=”#”> Google says they completely ignore them.
Most of the time, at least when I use that, it is for a placeholder. The links don’t really go anywhere, so it would make sense that Google would ignore them.
John Mueller said since they go nowhere, Google ignores them:

We ignore them, they go nowhere :).
— John ☆.o(≧▽≦)o.☆ (@JohnMu) August 22, 2017
I am not sure why the person followed up to John’s response asking if those links then count as a link on the page or not. Google ignores them.
What do you want Google to do with links that do that?
Forum discussion at Twitter.

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