Page has nofollow outgoing internal links issue means that a specific URL contains internal links with a rel=nofollow attribute.
The Importance of the Issue
The presence of internal links with a rel=nofollow attribute recommends a bot to avoid following internal links, thus decreasing their value and weight distribution among website links. Despite the presence of the recommendation, a search engine mostly follows such links.
<…>Use the nofollow value when other values don’t apply, and you’d rather Google not associate your site with, or crawl the linked page from, your site. (For links within your own site, use robots.txt, as described below.)<…>
How to Check the Issue
Using any browser is enough to check the issue. Open the source code of the flawed page. To do this, click the right mouse button at any spot of the page and choose “browse the code” option, or apply an online tool Codebeautify.
Find the links <a href=”https://www.site.com” rel=”nofollow”>example link</a>. The presence of such code segment points to an issue at this page.
Furthermore, Sitechecker allows you to effortlessly track your links. By conducting an audit, you can determine if there are any nofollow outgoing internal links.

With just a single click, you can get a full list of harmed URLs

If you want to delve deeper into this matter, you can check all links from a specific page and their rel status.

How to Fix This Issue
Please note! Before changing the link attribute, make sure it was not done purposefully. Coordinate your actions with a SEO specialist, if necessary.
Delete the rel nofollow attribute for a specific reference. In popular CMS, such as WordPress with an installed Yoast plugin, it is done the following way.
As a rule, solving the issue requires switching to the editing mode of a specific page, activating code editing mode denoted with <> symbols, and finding the broken link.
A link with nofollow attribute: <a href=”https://site.com/” rel=”nofollow”>Anchor</a>.
A reference without nofollow attribute: <a href=”https://site.com/”>Anchor</a>.
Detect pages with nofollow internal links
Crawl the website to collect all pages that have nofollow outgoing internal links