This article https://help.ahrefs.com/en/articles/2595459-site-audit-is-reporting-pages-that-are-not-on-my-site-why-is-this doesn't address the issue because "first found at" and "number of inlinks" are both blank/0 for all links.
One of the links is "domain.com/%C2%A0".
Another is "domain.com/VALID-PAGE" but the ALL CAPS makes it not work.
Another is a valid page but missing the last letter.
Again, "first found at" and "number of inlinks" are blank for all of them. So ahrefs seems to have conjured them out of thin air.