Sometimes it can take a little bit for the server files to be updated. If you can’t wait, then you can take the non-client side mods from the client mods folder and then put them in the server.
When the server files for you update come out, please then you these. Our server files come with a number of config and other changes that can help your server.
If you’re hosting a server from Kinetic Hosting, then you can always download server files for the latest update via our modapack manager.