worldguardextraflags

[14:25:48] [Server thread/ERROR]: Could not pass event PortalCreateEvent to WorldGuardExtraFlags v4.1.2
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot.jar:git-Spigot-492a779-731e819]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot.jar:git-Spigot-492a779-731e819]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) ~[spigot.jar:git-Spigot-492a779-731e819]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.BlockPortal$Shape.createPortal(BlockPortal.java:342) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.BlockPortal.a(BlockPortal.java:60) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.BlockFire.onPlace(BlockFire.java:289) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.ItemStack.placeItem(ItemStack.java:242) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.PlayerInteractManager.a(PlayerInteractManager.java:481) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1250) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:27) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:1) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(SourceFile:144) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(SourceFile:118) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.MinecraftServer.aZ(MinecraftServer.java:917) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:910) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:894) [spigot.jar:git-Spigot-492a779-731e819]
	at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:827) [spigot.jar:git-Spigot-492a779-731e819]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]
Caused by: java.lang.NoSuchMethodError: org.bukkit.event.world.PortalCreateEvent.getBlocks()Ljava/util/ArrayList;
	at net.goldtreeservers.worldguardextraflags.listeners.EntityListener.onPortalCreateEvent(EntityListener.java:24) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot.jar:git-Spigot-492a779-731e819]
	... 22 more