We do have over 150.000 assets in our library, but I’m not sure if this has got anything to do with that. I hope you can help us, because we can’t upload any images and publish content.
That error ID is a serverside log. It shows me that for that particular user, something is rewriting the upload before it reaches our server (probably enterprise security/firewall software or similar). Are they using anything like that? A common one is Zscaler.
Easy test is to connect that laptop to a phone hotspot (which bypasses your normal wifi network and its filtering) and see if the upload still fails. You can also try a different browser or computer altogether.
If that is the issue, asking your IT team to add an exception to allow datocms-assets.6c36efb897e5eae1d2a887cfa632eea9.eu.r2.cloudflarestorage.com should help.