If you see this, something is broken, a key file named "app.js" is likely missing.
One possibility (quite rare after April 2024) is that Windows Defender removed it. Please refer to https://myfavett.com/about_virus_alert to fix.
(This tool is still correctly downloading all the mp4 files, but since "Archive.html" (this file) isnt' working properly, the mp4 files are all named with numbers, which aren't worth collecting)