I've installed WW2.16 in VirtualBox on my Windows 10 machine using the Ubuntu20.04 appliance and following the instructions for that combination. I can view WW pages, use Course Administration, etc., but problems in the Demo set in myTestCourse do not show images, and MathJax does not work. In fact, the FF dev panel says that http://127.0.0.1/webwork2_files/mathjax/es5/tex-chtml.js is not found (404 error). It is present and world-readable; I have checked.
I modified site.conf, localOverrides.conf, and the NAT settings in VirtualBox per the instructions for port forwarding. When I browse to localhost:8080/webwork2_files on my host machine, I get the "WeBWorK Placeholder Page" that I should get. What have I done wrong or failed to do?
Thanks in advance,