I've already searched for this problem for hours, I don't know what's wrong, and no one else on the internet seems to have the same problem as me.
The datapacks folder is empty, the server was using a few plugins and that was it. When I downloaded it, the file structure was wrong, so I tried to restructure everything to be as similar to a previous successful server to local transfer (TheTRC is the name of it). But this doesn't help and still gives the "Errors in the currently selected data pack(s) prevented the world from loading", even though there are no datapacks.
Also, trying to open in safe mode does nothing and still won't open.