Why are the plugins not loading properly?

I wanted to ask what I have to do to get both loaded.

I've written a plugin for Minecraft (Spigot), which contains a scoreboard, as well as prefixes.

However, only one is loaded.

Here's the class:

https://hastebin.com/...hekaw.java

So the scoreboard is loaded, only the prefix in the tab is not loaded.

I also tried it once with a separate plugin, but then the scoreboard was removed, and the prefix in the TAB only red, without writing before the name.

Rename your package, from Main to de.val0rd.scoreboard.main

If a plugin is not loaded, this is not due to the name of the pack.

I fixed it by incorporating it from the beginning.

But sometimes