If you download a copy of one a those files and try opening that, does it work? Or otherwise upload the downloaded files here, perhaps someone could look at them and see if there’s a problem.
We have been investigating this. Still not sure yet what is strange about your file, but it does open in the current versions of desktop SketchUp 2021 and 2022. Saving it as another file does not fix it for web use, but select all, copy, new, paste in place, does give you a file that works on web. Try this version: