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net.minecraft.server.v1_8_R3.ReportedException: Sending packet
        at net.minecraft.server.v1_8_R3.PlayerConnection.sendPacket(PlayerConnection.java:1130) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.PlayerList.a(PlayerList.java:155) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:159) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:68) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.NetworkManager.tick(NetworkManager.java:378) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:543) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.ServerConnection.c(ServerConnection.java:249) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:1180) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:881) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:719) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$spin$0(MinecraftServer.java:136) ~[server.jar:git-Carbon-unknown]
        at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.lang.NullPointerException: type cannot be null
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787) ~[server.jar:git-Carbon-unknown]
        at com.comphenix.protocol.injector.StructureCache.getStructure(StructureCache.java:138) ~[?:?]
        at com.comphenix.protocol.events.PacketContainer.<init>(PacketContainer.java:126) ~[?:?]
        at com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector.onPacketSending(NetworkManagerInjector.java:96) ~[?:?]
        at com.comphenix.protocol.injector.netty.channel.NettyChannelInjector.processOutbound(NettyChannelInjector.java:553) ~[?:?]
        at com.comphenix.protocol.injector.netty.channel.NettyChannelInjector$2.doProxyRunnable(NettyChannelInjector.java:456) ~[?:?]
        at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.proxyRunnable(NettyEventLoopProxy.java:43) ~[?:?]
        at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.execute(NettyEventLoopProxy.java:252) ~[?:?]
        at net.minecraft.server.v1_8_R3.NetworkManager.dispatchPacket(NetworkManager.java:330) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.NetworkManager.handleDetailedPacket(NetworkManager.java:253) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.NetworkManager.handle(NetworkManager.java:241) ~[server.jar:git-Carbon-unknown]
        at net.minecraft.server.v1_8_R3.PlayerConnection.sendPacket(PlayerConnection.java:1116) ~[server.jar:git-Carbon-unknown]
        ... 12 more