"Fatally missing blocks and items"

Hello, I recently tried opening a server with the Sprout modpack, now unlike any time I have ever used Aternos for modded server purposes I was met with and error that refused to let me connect to my own server, "Fatally missing blocks and items", now I have made sure I am using the exact same version of my modpack as the server runs, so I do not know what I am missing, can anyone help?

Quote from thienbao860

Did you use the modpack before that?

Yes, this is not the first time I use Sprout just not with a server.