Error

[16:44:16 ERROR]: Could not pass event PlayerJoinEvent to Varo v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.PlayerList.onPlayerJoin(PlayerList.java:296) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.PlayerList.a(PlayerList.java:156) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.LoginListener.b(LoginListener.java:144) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.LoginListener.c(LoginListener.java:54) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.NetworkManager.a(NetworkManager.java:231) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.ServerConnection.c(ServerConnection.java:148) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.A(MinecraftServer.java:809) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.DedicatedServer.A(DedicatedServer.java:368) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.z(MinecraftServer.java:651) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java:554) [craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]
Caused by: java.lang.NullPointerException
        at de.Panakotta00.Varo.Event.Events.onJoin(Events.java:82) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_60]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_60]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[craftbukkit.jar:git-Spigot-1d14d5f-ba32592]
        ... 14 more