I'm getting these too.

I have months of work into these models I made, and all the models I have will not load. They are around 1-2mb in size so not that big. I tried logging in and out, importing rather than opening, no auto-recoverability. I keep getting the same results that all my models are running an Error 404 and everything is gone. Kinda has me pretty concerned.

Short lived for the cleared error. So i know my models are saved somewhere....but the error is back and i cant open my models again. hmm maybe ill give it a few days.

I'm also having this issue. None of my projects will load, and I have weeks of work into them. Error 404 on every single one, no matter what browser or device I use.