[21:09:32 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'sinfo' in plugin Info v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:732) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1761) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1565) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:12) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_191]
        at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_191]
        at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:109) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1016) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:943) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:841) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.getHealth()I
        at me.szwagru.CMDS.onCommand(CMDS.java:29) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Paper-1.13.2-b439.jar:git-Paper-439]
        ... 15 more