[12:28:15] [Server thread/ERROR] [Sponge]: Could not pass ClientConnectionEvent$Join$Impl to Plugin{id=esiniacore, name=Esinia Core, version=1.0, source=C:\Users\Ghaz\Desktop\Minecraft\Minecraft Server 1.11\mods\Esinia Server Core.jar}
java.lang.NullPointerException
        at zorg.esinia.server.events.EventPlayerJoin.onPlayerJoin(EventPlayerJoin.java:26) ~[EventPlayerJoin.class:?]
        at org.spongepowered.common.event.listener.JoinListener_EventPlayerJoin_onPlayerJoin28.handle(Unknown Source) ~[?:?]
        at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95) ~[RegisteredListener.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:314) [SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:296) [SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:341) [SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:329) [SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:192) [SpongeImpl.class:1.11.2-2282-6.1.0-BETA-2338]
        at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:1617) [mt.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:262) [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:211) [NetworkDispatcher$1.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:287) [er.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [mh.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:743) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:384) [lh.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:624) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]