IllegalAccessError on starting server

[Elikill58]

Hello,

I'm on minecraft 1.12.2, and with SpongeForge_1.12.2_2768-7.1.6-RC3660.
I'm getting this error when the server start:

[Server thread/ERROR] [Sponge]: Could not pass FMLInitializationEvent to Plugin{id=packetgate, name=PacketGate, version=0.1.1, source=/home/serveur9/minecraft/./mods/plugins/PacketGate-0.1.1.jar}
java.lang.IllegalAccessError: tried to access field net.minecraft.network.NetworkSystem.field_151274_e from class eu.crushedpixel.sponge.packetgate.plugin.PluginPacketGate
	at eu.crushedpixel.sponge.packetgate.plugin.PluginPacketGate.init(PluginPacketGate.java:31) ~[PluginPacketGate.class:?]
	at org.spongepowered.common.event.listener.GameInitializationEventListener_PluginPacketGate_init15.handle(Unknown Source) ~[?:?]
	at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95) ~[RegisteredListener.class:1.12.2-2768-7.1.6-RC3660]
	at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:383) [SpongeModEventManager.class:1.12.2-2768-7.1.6-RC3660]
	at org.spongepowered.mod.event.SpongeModEventManager.extendedPost(SpongeModEventManager.java:443) [SpongeModEventManager.class:1.12.2-2768-7.1.6-RC3660]
	at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:404) [SpongeModEventManager.class:1.12.2-2768-7.1.6-RC3660]
	at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:252) [SpongeImpl.class:1.12.2-2768-7.1.6-RC3660]
	at org.spongepowered.mod.SpongeMod.onStateEvent(SpongeMod.java:339) [SpongeMod.class:1.12.2-2768-7.1.6-RC3660]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) [minecraft_server.1.12.2.jar:?]
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:217) [minecraft_server.1.12.2.jar:?]
	at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218) [LoadController.class:?]
	at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196) [LoadController.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) [minecraft_server.1.12.2.jar:?]
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) [minecraft_server.1.12.2.jar:?]
	at com.google.common.eventbus.EventBus.post(EventBus.java:217) [minecraft_server.1.12.2.jar:?]
	at net.minecraftforge.fml.common.LoadController.redirect$onPost$zza000(LoadController.java:553) [LoadController.class:?]
	at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135) [LoadController.class:?]
	at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:744) [Loader.class:?]
	at net.minecraftforge.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:108) [FMLServerHandler.class:?]
	at net.minecraftforge.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:338) [FMLCommonHandler.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:219) [nz.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]

[Elikill58]

Up ! ...