Solved AsyncPlayerChatEvent is null

Hello, I am coding a plugin that will summon a wolf if a player sends a specific message. However, it returns null every time I enter the message in chat. Here is the event:

Code:

@EventHandler
public void onPlayerChat(AsyncPlayerChatEvent e) {
    if (chat) {
        if (positiveMessages.contains(e.getMessage())) {
            summonTamedWolves(e.getPlayer());
        } else if (negativeMessages.contains(e.getMessage())) {
            summonAngryWolves(e.getPlayer());
        }
    }
}

I doubt anything is wrong with the event itself. It's likely something to do with the method that summons the wolf. Even more specific, I'm pretty sure it's the getWorld method. Here it is:

Code:

public static void summonTamedWolves(Player player) {
    for (int i = 10; i > 0; i--) {
        Entity wolfEntity = player.getWorld().spawnEntity(player.getLocation(), WOLF);
        Tameable wolf = (Tameable) wolfEntity;
        wolf.setOwner(player);
        player.sendMessage(ChatColor.GREEN + "Friendly dogs summoned!");
    }
}

Here are the logs:

Code:

[12:04:17] [Async Chat Thread - #0/ERROR]: Could not pass event AsyncPlayerChatEvent to Main v1.18.1
org.bukkit.event.EventException: null
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) [spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) [spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
    at net.minecraft.server.network.PlayerConnection.chat(PlayerConnection.java:1863) [spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:1797) [spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:1763) [spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at net.minecraft.network.protocol.game.PacketPlayInChat$1.run(PacketPlayInChat.java:40) [spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) [?:?]
    at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) [?:?]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [?:?]
    at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.IllegalStateException: Asynchronous entity add!
    at org.spigotmc.AsyncCatcher.catchOp(AsyncCatcher.java:14) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at net.minecraft.server.level.WorldServer.addEntity(WorldServer.java:988) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at net.minecraft.server.level.WorldServer.addFreshEntity(WorldServer.java:934) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftWorld.addEntityToWorld(CraftWorld.java:804) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftRegionAccessor.addEntity(CraftRegionAccessor.java:530) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftRegionAccessor.spawn(CraftRegionAccessor.java:506) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftRegionAccessor.spawn(CraftRegionAccessor.java:500) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftRegionAccessor.spawn(CraftRegionAccessor.java:486) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at org.bukkit.craftbukkit.v1_18_R1.CraftRegionAccessor.spawnEntity(CraftRegionAccessor.java:394) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
    at com.max.firstplugin.Main.summonTamedWolves(Main.java:47) ~[?:?]
    at com.max.firstplugin.Main.onPlayerChat(Main.java:154) ~[?:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
    at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
    ... 12 more

Note: I am new to Bukkit. I'm still learning the spigot api.

 

Thank you so much! I spent an hour debugging the top half when I didn't even see the bottom half! I fixed the problem.