[18:16:28 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'pinfo' in plugin PlayerInformation v1.3.5
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:645) ~[spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.PlayerConnection.handleCommand(PlayerConnection.java:1313) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1148) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_74]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_74]
        at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_74]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.getHealth()I
        at me.Grimlock257.PlayerInformation.PlayerInformation.onCommand(PlayerInformation.java:481) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.9.jar:git-Spigot-dd155ed-23ad72b]
        ... 15 more