GeoGebra SLS upload with index.html in the root of the zip file and filename must be index.html
Channel: Open Source Physics Singapore / Tracker / TagUI
Date: 07/11/2022

https://vle.learning.moe.edu.sg/mrv/my-library/lesson/view/75adaff8-1ae0-4d2a-8428-613cd415cff5/page/46467531

#GeoGebra #SLS upload with #simulation index.html in the root of the zip file and filename must be index.html

Even experts can get this wrong, so thus the need for this video!
enjoy!
Made the Community Gallery lesson in Student Learning Space

after debugging on windows,
make sure you enable file extension to true 
what you should see is 
index.html
and not index.html.html.