This error pops up when I try to share one of my databases.
I think I figured it out. The database had a relationship established with another database, but the key fields were not define. After setting the key fields, I was able to upload without the error.
It’s not immediately clear to me why a missing relationship key would affect uploading to a server, but I will investigate this. If it can be duplicated, I will either fix it, or at a minimum provide a better error message.
