Unable to download this model and the models made by others. This is what I see when I click to download models now.

Try clear your Chrome cache

I cleared my cache and having the same issue.

Though some 2019 models seem to wrok, anything 2018 or earlier gets the same message as the OP for me…

Just to add, from within Sketchup it also gets an error.

Try again, now you can see the model in your post:

and download works for every versions.

Hmm… mine seems to be working again. I wonder if it was a glitch… but I also wonder if geography had something to do with it. I’m based in Singapore, I don’t know about the OP.

Mine worked for a little bit, but now it’s back to the same thing. Can’t upload, or download my models and got the same error message.