Did you backup your world? ALWAYS DO IT!
That’s always the most important thing to always do. However, the fastest way is to “Reset Server Files”, just make sure to NOT select “All Server Files”, so your world won’t be deleted. You’ll be able to do this if the update is available on Apex.
Otherwise, you can access your server through Apex Panel, then click on “FTP File Access” and replace all the old mods with the updated ones you have in your client version.
Remember to only replace the mods that are already on the server, don’t add the ones you have only on your client. And do the same with datapacks (place them in your main “datapacks” folder) and configs too.
That’s it!
