Some of the links in the Image Guided Rad Therapy Tutorial Data set are not working

Operating system: Win
Slicer version:5.4.0

The link to download day 2 CT and Dose data, and keep returning the message:

Not Found

The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.
Please can someone help me with the correct link. I am new to Slicer3D.