14.12 23:33:18 [Server] INFO ZloyBalakin issued server command: /nitags group ZloyBalakin adm
14.12 23:33:18 [Server] ERROR null
14.12 23:33:18 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'nitags' in plugin niTags v1.0.1
14.12 23:33:18 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1399) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1234) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_191]
14.12 23:33:18 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_191]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
14.12 23:33:18 [Server] INFO Caused by: java.lang.NoSuchMethodError: org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(Ljava/io/InputStream;)Lorg/bukkit/configuration/file/YamlConfiguration;
14.12 23:33:18 [Server] INFO at com.niko.tags.configuration.ConfigurationHandler.reload(ConfigurationHandler.java:36) ~[?:?]
14.12 23:33:18 [Server] INFO at com.niko.tags.configuration.ConfigurationHandler.getFile(ConfigurationHandler.java:44) ~[?:?]
14.12 23:33:18 [Server] INFO at com.niko.tags.scoreboard.ScoreboardManager.setGroup(ScoreboardManager.java:94) ~[?:?]
14.12 23:33:18 [Server] INFO at com.niko.tags.listeners.CommandListener.onCommand(CommandListener.java:121) ~[?:?]
14.12 23:33:18 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Spigot.jar:git-Spigot-dcd1643-e60fc34]
14.12 23:33:18 [Server] INFO ... 15 more