[17:46:03] [Server thread/INFO] [FML]: [Server thread] Server side modded connection established
[17:46:03] [Server thread/WARN] [minecraft/NetworkSystem]: Failed to handle packet for /192.168.1.103:65321
net.minecraft.util.ReportedException: Loading entity NBT
        at net.minecraft.entity.Entity.func_70020_e(Entity.java:1878) ~[vg.class:?]
        at net.minecraft.world.storage.SaveHandler.func_75752_b(SaveHandler.java:224) ~[bfb.class:?]
        at net.minecraft.server.management.PlayerList.func_72380_a(PlayerList.java:324) ~[pl.class:?]
        at org.spongepowered.common.util.NetworkUtil.initializeConnectionToPlayer(NetworkUtil.java:166) ~[NetworkUtil.class:1.12.2-2838-7.3.0]
        at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:2407) ~[pl.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:255) ~[NetworkDispatcher.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:72) ~[NetworkDispatcher.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:205) ~[NetworkDispatcher$1.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:285) ~[gw.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [oz.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:790) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandKeys
        at net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandData.registerGettersAndSetters(WandData.java:92) ~[WandData.class:?]
        at net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandData.<init>(WandData.java:63) ~[WandData.class:?]
        at net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandData.<init>(WandData.java:67) ~[WandData.class:?]
        at net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandDataBuilder.create(WandDataBuilder.java:48) ~[WandDataBuilder.class:?]
        at net.foxdenstudio.sponge.foxcore.plugin.wand.data.WandDataBuilder.buildContent(WandDataBuilder.java:60) ~[WandDataBuilder.class:?]
        at org.spongepowered.api.data.persistence.AbstractDataBuilder.build(AbstractDataBuilder.java:87) ~[AbstractDataBuilder.class:1.12.2-2838-7.3.0]
        at org.spongepowered.common.data.util.DataUtil.lambda$deserializeManipulator$11(DataUtil.java:243) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at java.util.Optional.flatMap(Optional.java:241) ~[?:1.8.0_112]
        at org.spongepowered.common.data.util.DataUtil.deserializeManipulator(DataUtil.java:243) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at org.spongepowered.common.data.util.DataUtil.tryDeserializeManipulator(DataUtil.java:229) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at org.spongepowered.common.data.util.DataUtil.lambda$deserializeManipulatorList$10(DataUtil.java:211) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at java.util.Optional.ifPresent(Optional.java:159) ~[?:1.8.0_112]
        at org.spongepowered.common.data.util.DataUtil.deserializeManipulatorList(DataUtil.java:211) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at org.spongepowered.common.data.util.DataUtil.readCustomData(DataUtil.java:563) ~[DataUtil.class:1.12.2-2838-7.3.0]
        at net.minecraft.item.ItemStack.handler$zih000$impl$onRead(ItemStack.java:3129) ~[aip.class:?]
        at net.minecraft.item.ItemStack.<init>(ItemStack.java:139) ~[aip.class:?]
        at net.minecraft.entity.player.InventoryPlayer.func_70443_b(InventoryPlayer.java:639) ~[aec.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70037_a(EntityPlayer.java:874) ~[aed.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_70037_a(EntityPlayerMP.java:195) ~[oq.class:?]
        at net.minecraft.entity.Entity.func_70020_e(Entity.java:1866) ~[vg.class:?]
        ... 14 more
[17:46:03] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: coma_buster lost connection: Internal server error