Could not pass event PlayerLoginEvent to GSigns v6.6 org.bukkit.event.EventException

[Freyhold]

Describe the bug
Could not pass event PlayerLoginEvent to GSigns v6.6
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[server.jar:git-PaperSpigot-4c7641d1]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.PlayerList.attemptLogin(PlayerList.java:472) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:118) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:54) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:231) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.ServerConnection.c(ServerConnection.java:148) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:875) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [server.jar:git-PaperSpigot-4c7641d1]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
Caused by: java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:57) ~[?:1.8.0_275]
at sun.reflect.UnsafeQualifiedObjectFieldAccessorImpl.get(UnsafeQualifiedObjectFieldAccessorImpl.java:38) ~[?:1.8.0_275]
at java.lang.reflect.Field.get(Field.java:393) ~[?:1.8.0_275]
at de.stylextv.gs.packet.Reflections$1.get(Reflections.java:145) ~[?:?]
at de.stylextv.gs.packet.TinyProtocol.getChannel(TinyProtocol.java:407) ~[?:?]
at de.stylextv.gs.packet.TinyProtocol$5.onPlayerLogin(TinyProtocol.java:182) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[server.jar:git-PaperSpigot-4c7641d1]
... 14 more

To Reproduce
Steps to reproduce the behavior:

1. install on 1.8.8

Expected behavior
plugin will work

Plugin Version
GSigns v6.6

Server Version
paper - 1.8

Other Plugins
itsPreview, Skript, PlaceholderAPI, ClearLag, CustomDeathMessages, GSigns, FastAsyncWorldEdit, ChestRestock, zTopList, AntiWorldDownloader, AntiDisconnectSpam, ViaVersion, InstantRespawn, HideStream, EZColors, LuckPerms, WorldEdit, BroadcastXS, WorldGuard, ProtocolLib, AAC5, Vault, MessageFilter, Essentials, PNCP, BountyHunters, HolographicDisplays, DeluxeChat, EpicLevels, Citizens, Shopkeepers, DeluxeMenus, ReporterGUI, TAB, PrisonRanksX, PvPManager, EssentialsSpawn, TitleManager, HolographicExtension, InteractiveChat, LeaderHeadsRevamped, CitizensCMD, AuctionMaster, AuctionMasterItemDisplay
Error Log
Could not pass event PlayerLoginEvent to GSigns v6.6
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[server.jar:git-PaperSpigot-4c7641d1]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [server.jar:git-PaperSpigot-4c7641d1]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.PlayerList.attemptLogin(PlayerList.java:472) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:118) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:54) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:231) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.ServerConnection.c(ServerConnection.java:148) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:875) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [server.jar:git-PaperSpigot-4c7641d1]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [server.jar:git-PaperSpigot-4c7641d1]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
Caused by: java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:57) ~[?:1.8.0_275]
at sun.reflect.UnsafeQualifiedObjectFieldAccessorImpl.get(UnsafeQualifiedObjectFieldAccessorImpl.java:38) ~[?:1.8.0_275]
at java.lang.reflect.Field.get(Field.java:393) ~[?:1.8.0_275]
at de.stylextv.gs.packet.Reflections$1.get(Reflections.java:145) ~[?:?]
at de.stylextv.gs.packet.TinyProtocol.getChannel(TinyProtocol.java:407) ~[?:?]
at de.stylextv.gs.packet.TinyProtocol$5.onPlayerLogin(TinyProtocol.java:182) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[server.jar:git-PaperSpigot-4c7641d1]
... 14 more