We have resolved this issue and will rescan the sites this weekend. If you are concerned, you can rescan your site from the broken link report page.
Our link checker is currently getting false broken link errors from links to www2.gmu.edu. These may be due to intermittent server problems on their end or they may be blocking our scans. We are working with ITS to resolve this. In the meantime, please ignore the broken links our checker identifies if they are on www2.gmu.edu or any other site hosted in the central web system.
If you noticed this already, kudos to you for keeping up with broken links on your site. It's important.
August 07, 2019