Not working on PaperMC 1.14.4

[Drift91]

I get the following when a player says anything in chat:

[03:05:38] [Async Chat Thread - #0/ERROR]: Could not pass event AsyncPlayerChatEvent to ChatPing v1.1
java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
	at com.notoriousdev.chatping.ChatPing.onPlayerChat(ChatPing.java:32) ~[?:?]
	at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor52.execute(Unknown Source) ~[?:?]
	at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.14.4.jar:git-Paper-210]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:76) ~[patched_1.14.4.jar:git-Paper-210]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.14.4.jar:git-Paper-210]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545) ~[patched_1.14.4.jar:git-Paper-210]
	at net.minecraft.server.v1_14_R1.PlayerConnection.chat(PlayerConnection.java:1713) ~[patched_1.14.4.jar:git-Paper-210]
	at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:1628) ~[patched_1.14.4.jar:git-Paper-210]
	at net.minecraft.server.v1_14_R1.PacketPlayInChat$1.run(PacketPlayInChat.java:41) ~[patched_1.14.4.jar:git-Paper-210]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_221]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_221]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_221]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_221]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]