Hi,
The link checker (com.day.cq.rewriter.linkchecker.LinkInfoStorage.getLinks()) checks the store link status at /var/linkchecker/
for internal links, link should be stored at
/var/linkchecker/http/localhost%3A4502
/var/linkchecker/https/localhost%3A4502
Link status you can check here also:
http://localhost:4502/etc/linkchecker.html
http://localhost:4502/var/linkchecker.list.json?_dc=1563485414669
you can get the staus of links using json also.
Arun Patidar