Monthly links not working

For the past several weeks the links to the individual months through the 1970s and 80s do not appear to be working. You have to scroll manually to get to weekly charts. Any chance this could be fixed?
Thank you!

A great site and amazing resource for chart enthusiasts!

Keep up the good work!

I noticed that too. I hope they can make the change.

I noticed the same problem with the 2020 charts