Download Backup 404 message

I am getting a 404 when I try to download my site backups, logged in as Admin.
It shows me a link and the I am redirected to a 404 page.
It sounds like a simple permissions issues except that it shouldn’t be.
This works on my local (development) installation and not on my google cloud installation.

Any console errors?

It is now mysteriously there. I had to reload the page and clear the cache. But no, before there were no console errors other than the 404.