SpigotVIP PinAuthentication | Leading GUI Log-in Authentication plugin | 1.14.4 support 6.25

Update pls

Could not pass event InventoryCreativeEvent to PinAuthentication v3.3
org.bukkit.event.EventException: null
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:499) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:2104) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.PacketPlayInSetCreativeSlot.a(SourceFile:23) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.PacketPlayInSetCreativeSlot.a(SourceFile:9) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_172]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_172]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:747) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:405) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_172]
Caused by: java.lang.NullPointerException
at me.pandu.listener.InvClick.onClick2(InvClick.java:51) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_172]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_172]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_172]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_172]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e]
... 15 more
??
what do I do?

thx very much