Internal link to a redirect
What it means
These pages link to URLs that redirect. The link works, but every visitor and crawler pays for an extra round trip, and some of the link's value is diluted on the way.
How to fix it
Edit the links to point at the destination URL directly. The detail column names the redirecting target; the destination is on that URL's row. This is one of the cheapest wins on most sites, because a template link used across the whole site to an old URL can account for thousands of wasted requests.
Finding it in CrawlStat
After a crawl, open Issues and pick Internal link to a redirect. Click Show all in Pages to filter the Pages table to the affected pages, or Export affected to hand the list to whoever owns the fix. Audit ID: internal_link_to_redirect.