When you enter and leave the shards area, shards keep appearing. This is a huge bug and needs to be fixed. I've done all the other installations and I want to help everyone. There's an error in the kills counter; to fix it:
plugins TAB config.yml scoreboard kills paste this:
&#FC0000🗡 &fKills &#FC0000%statistic_player_kills%
and it works perfectly, but there is one problem: shards keep appearing.