Minecraft 1.16.5 Scoreboard Java Spigot setdisplayname PacketPlayOutScoreboardScore?

I'm reworking an old plugin of mine and now only errors are displayed (not yet tried out ingame, I know that it does not work.

Code:

Error:

Who has ideas how I can solve these errors or how you can do better in 1.16.5 n scoreboard. I searched online and didn't help.

But that has to be a very old plugin if you still had to work with NMS and packets to get a scoreboard?

Pull everything out and do it all over again with Bukkit API.

https://bukkit.org/threads/tutorial-scoreboards-teams-with-the-bukkit-api.139655/

The NMS methods, on the other hand, are not an official API, so unannounced and serious changes can occur when the version changes, as happened here ^^.

Yup the plugin is very old haha. I'll take a look at the link Thank you very much!

Was a lot easier than before haha XD