Safari shows the red bar error message now.
In Chrome:
Unmasked Vendor: Intel Inc.
Unmasked Renderer: Intel(R) Iris(TM) Graphics 540
And on your site, immediately upon loading the console is giving me 29 different 404 errors across different filenames like:
VM208:1 GET https://storage.googleapis.com/znoclip/z.noclip.website/j3d/smg/ObjectData/Hanachan.arc 404
(anonymous) @ VM208:1
i @ string_decoder.js:135
e.getModel @ string_decoder.js:135
c @ string_decoder.js:135
e.spawnObject @ string_decoder.js:135
e.spawnZone @ string_decoder.js:135
y @ string_decoder.js:135
...
string_decoder.js:135 Could not fetch archive
j3d/smg/ObjectData/Hanachan.arc 404
Hope that helps. Good luck! :) The idea sounds neat.