The plugin is great but has a bug, I get this error from time to time in the console: [23:52:00 ERROR]: Could not pass event PlayerQuitEvent to ServerAntiVPN v1.0.0
java.lang.NullPointerException: Cannot invoke "rip.snake.antivpn.spigot.version.VersionHelper.getProtocolVersion(org.bukkit.entity.Player)" because "this.versionHelper" is null
at rip.snake.antivpn.spigot.listeners.PlayerListener.handlePlayer(PlayerListener.java:77) ~[?:?]
at rip.snake.antivpn.spigot.listeners.PlayerListener.playerQuit(PlayerListener.java:67) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor133.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.5.jar:git-Purpur-1171]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.5.jar:git-Purpur-1171]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.5.jar:git-Purpur-1171]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:624) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.PlayerList.disconnect(PlayerList.java:598) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1986) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.NetworkManager.handleDisconnection(NetworkManager.java:713) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.ServerConnection.c(ServerConnection.java:193) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1597) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:449) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1416) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1142) ~[patched_1.16.5.jar:git-Purpur-1171]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:293) ~[patched_1.16.5.jar:git-Purpur-1171]
at java.lang.Thread.run(Thread.java:831) [?:?]
Can you help me solve it?