[20:46:24] [Server thread/ERROR] [Sponge]: Error occurred while executing command 'fg link PixelSpawn town' for source EntityPlayerMP['Karagra'/34081, l='world', x=-50.79, y=40.50, z=-11.44]: org/spongepowered/api/event/SpongeEventFactoryUtils
java.lang.NoClassDefFoundError: org/spongepowered/api/event/SpongeEventFactoryUtils
        at net.foxdenstudio.sponge.foxguard.plugin.event.util.FGEventFactory.createFGUpdateEvent(FGEventFactory.java:27) ~[FGEventFactory.class:?]
        at net.foxdenstudio.sponge.foxguard.plugin.FGManager.link(FGManager.java:442) ~[FGManager.class:?]
        at net.foxdenstudio.sponge.foxguard.plugin.command.CommandLink.process(CommandLink.java:122) ~[CommandLink.class:?]
        at net.foxdenstudio.sponge.foxcore.plugin.command.FCCommandDispatcher.process(FCCommandDispatcher.java:235) ~[FCCommandDispatcher.class:?]
        at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:336) ~[SimpleDispatcher.class:1.10.2-2221-5.1.0-BETA-2188]
        at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:295) ~[SpongeCommandManager.class:1.10.2-2221-5.1.0-BETA-2188]
        at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1083) ~[bd.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:913) ~[me.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:892) ~[me.class:?]
        at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37) ~[im.class:?]
        at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9) ~[im.class:?]
        at org.spongepowered.common.network.PacketUtil.lambda$onProcessPacket$0(PacketUtil.java:158) ~[PacketUtil.class:1.10.2-2221-5.1.0-BETA-2188]
        at org.spongepowered.common.event.tracking.CauseTracker.switchToPhase(CauseTracker.java:156) [CauseTracker.class:1.10.2-2221-5.1.0-BETA-2188]
        at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:157) [PacketUtil.class:1.10.2-2221-5.1.0-BETA-2188]
        at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zjf000(SourceFile:539) [fl$1.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [fl$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_111]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_111]
        at net.minecraft.util.Util.func_181617_a(SourceFile:45) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668) [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_111]