[22:37:59] [Server thread/ERROR] [Sponge]: Could not pass ClientConnectionEvent$Join$Impl to Plugin{id=enjin-minecraft-plugin, name=Enjin Minecraft Plugin, version=3.0.15-sponge, description=Enjin Minecraft Plugin for Sponge!, source=/home/MC/Pixelmon/mods/EMPSponge.jar}
java.lang.NullPointerException
        at com.enjin.sponge.EnjinMinecraftPlugin.saveRankUpdatesConfiguration(EnjinMinecraftPlugin.java:272) ~[EnjinMinecraftPlugin.class:?]
        at com.enjin.sponge.listeners.ConnectionListener.updatePlayerRanks(ConnectionListener.java:68) ~[ConnectionListener.class:?]
        at com.enjin.sponge.listeners.ConnectionListener.onJoin(ConnectionListener.java:50) ~[ConnectionListener.class:?]
        at org.spongepowered.common.event.listener.JoinListener_ConnectionListener_onJoin74.handle(Unknown Source) ~[?:?]
        at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95) ~[RegisteredListener.class:1.10.2-2123-5.1.0-BETA-1879]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:357) [SpongeModEventManager.class:1.10.2-2123-5.1.0-BETA-1879]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:340) [SpongeModEventManager.class:1.10.2-2123-5.1.0-BETA-1879]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:385) [SpongeModEventManager.class:1.10.2-2123-5.1.0-BETA-1879]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:370) [SpongeModEventManager.class:1.10.2-2123-5.1.0-BETA-1879]
        at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:140) [SpongeImpl.class:1.10.2-2123-5.1.0-BETA-1879]
        at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:401) [mp.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:260) [NetworkDispatcher.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:73) [NetworkDispatcher.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:209) [NetworkDispatcher$1.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:287) [eo.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [md.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:732) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387) [ld.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]