Compile the following template. Fields marked with (*) are mandatory, Fields with (-) are optional, Fields with (!) are mandatory in case of crash or bug

Type of Issue/Request (Bug / Crash / Suggestion / Translation / ...):

(*)Bug

Version of the mod or build number:

(*) extraalchemy-forge-1.12-build11-0.5.4

Are you a Single Player, a Multiplayer Client (You are a player in a server) or Server Side?:

(*)Multiplayer Client, sponge forge 2838-720

Minecraft Version (1.9.4, 1.10, 1.10.2, 1.11.2...):

(*) 1.12.2

Description (or what were you doing when it crashed):

(*) Right using potion bag kick me out!!

Pastebin of the log (fml-client-latest.log from your instance/logs folder):

(!) [minecraft/NetworkSystem]: Failed to handle packet for /106.59.245.15:56999
net.minecraft.util.ReportedException: Ticking player
at net.minecraft.entity.player.EntityPlayerMP.onUpdateEntity(EntityPlayerMP.java:459) ~[oq.class:?]
at net.minecraft.network.NetHandlerPlayServer.redirect$zik000$impl$onPlayerTick(NetHandlerPlayServer.java:2503) ~[pa.class:?]
at net.minecraft.network.NetHandlerPlayServer.update(NetHandlerPlayServer.java:173) ~[pa.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.update(NetworkDispatcher.java:209) ~[NetworkDispatcher$1.class:?]
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:285) ~[gw.class:?]
at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:180) [oz.class:?]
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:790) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:397) [nz.class:?]
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_202]
Caused by: java.lang.NullPointerException

ModPack (or list of mods via Pastebin. If using a modified modpack, write BOTH the modpack AND the link to the full mod list):

(!)

Pastebin of the config file (extraalchemy.cfg from your instance/config folder):

(!)

OS and Java version (Java8 + Windows10 / Java7 + MacOS / ...):

(!)Java8

Other information that you think might be useful:

(-)

I'll just assume this is not an issue of this mod

I need a full log, not just the stack trace part, if that's possible. Fill the other fields where possible, this is not enough for me to fix things up.
Since the log is huge I'll ask you to use pastebin too, if possible, it will save me some time