Bukkit

It looks like every time someone touches anything in their inventory it set off this error message:

4:18:01 PM [Server thread/ERROR]: Could not pass event InventoryClickEvent to PerWorldChatPlus v5.1.1\par
4:18:01 PM org.bukkit.event.EventException: null\par
\cf2 4:18:01 PM \tab at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:18:01 PM \tab at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:18:01 PM \tab at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:520) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:18:01 PM \tab at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:505) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:18:01 PM \tab at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2158) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:18:01 PM \tab at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:18:01 PM \tab at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:18:01 PM \tab at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:13) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:18:02 PM \tab at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:18:02 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:895) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:18:02 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(SourceFile:123) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:18:02 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:872) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-8043ebc-f690957]\par
4:18:02 PM \tab at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]\par
4:18:02 PM Caused by: java.lang.NoSuchMethodError: org.bukkit.inventory.Inventory.getName()Ljava/lang/String;\par
4:18:02 PM \tab at com.cloudcraftgaming.perworldchatplus.utils.ChatColorInventory.isChatColorInventory(ChatColorInventory.java:279) ~[?:?]\par
4:18:02 PM \tab at com.cloudcraftgaming.perworldchatplus.listeners.InventoryClickListener.onInventoryClick(InventoryClickListener.java:22) ~[?:?]\par
\cf1 4:18:02 PM \tab at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source) ~[?:?]\par
4:18:02 PM \tab at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]\par
\cf2 4:18:02 PM \tab at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_211]\par
4:18:02 PM \tab at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:18:02 PM \tab ... 17 more

There is also a second message that appears when someone crafts something:

4:22:18 PM [Server thread/ERROR]: Could not pass event CraftItemEvent to PerWorldChatPlus v5.1.1\par
4:22:18 PM org.bukkit.event.EventException: null\par
\cf2 4:22:18 PM \tab at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:22:18 PM \tab at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:22:18 PM \tab at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:520) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:22:18 PM \tab at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:505) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2158) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:13) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:895) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(SourceFile:123) [server.jar:git-Spigot-8043ebc-f690957]\par
\cf2 4:22:19 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:872) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-8043ebc-f690957]\par
4:22:19 PM \tab at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]\par
4:22:19 PM Caused by: java.lang.NoSuchMethodError: org.bukkit.inventory.Inventory.getName()Ljava/lang/String;\par
4:22:19 PM \tab at com.cloudcraftgaming.perworldchatplus.utils.ChatColorInventory.isChatColorInventory(ChatColorInventory.java:279) ~[?:?]\par
4:22:19 PM \tab at com.cloudcraftgaming.perworldchatplus.listeners.InventoryClickListener.onInventoryClick(InventoryClickListener.java:22) ~[?:?]\par
\cf1 4:22:19 PM \tab at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source) ~[?:?]\par
4:22:19 PM \tab at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]\par
\cf2 4:22:19 PM \tab at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_211]\par
4:22:19 PM \tab at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[server.jar:git-Spigot-8043ebc-f690957]\par
\cf1 4:22:19 PM \tab ... 17 more