[18:21:18 ERROR]: Could not pass event PlayerJoinEvent to PrimeCraft v1.2.150713
org.bukkit.event.EventException: null
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[spigot.jar:git-Paper-1233]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:514) [spigot.jar:git-Paper-1233]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:499) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.PlayerList.onPlayerJoin(PlayerList.java:370) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.PlayerList.a(PlayerList.java:183) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.LoginListener.b(LoginListener.java:171) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.LoginListener.e(LoginListener.java:63) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.NetworkManager.a(NetworkManager.java:250) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.ServerConnection.c(ServerConnection.java:150) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:940) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:426) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:767) [spigot.jar:git-Paper-1233]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:665) [spigot.jar:git-Paper-1233]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
Caused by: org.bukkit.command.CommandException: Unhandled exception executing command 'startgame' in plugin PrimeCraft v1.2.150713
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:151) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:676) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.Bukkit.dispatchCommand(Bukkit.java:590) ~[spigot.jar:git-Paper-1233]
        at com.sonicjumper.primecraft.main.listeners.PlayerActionListener.onPlayerLogin(PlayerActionListener.java:430) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor241.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[spigot.jar:git-Paper-1233]
        ... 15 more
Caused by: java.lang.NullPointerException
        at com.sonicjumper.primecraft.main.PrimeCraftGame.initializeGame(PrimeCraftGame.java:80) ~[?:?]
        at com.sonicjumper.primecraft.main.CommandHandler.onCommand(CommandHandler.java:286) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:151) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:676) ~[spigot.jar:git-Paper-1233]
        at org.bukkit.Bukkit.dispatchCommand(Bukkit.java:590) ~[spigot.jar:git-Paper-1233]
        at com.sonicjumper.primecraft.main.listeners.PlayerActionListener.onPlayerLogin(PlayerActionListener.java:430) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor241.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[spigot.jar:git-Paper-1233]
        ... 15 more