22:25:15: Xericore issued server command: /dtl trait

ERROR 22:25:50: Could not pass event InventoryClickEvent to dtlTraders v5.1.9

22:25:50:
java.lang.RuntimeException: java.lang.IllegalAccessException: Can not set final int field net.minecraft.server.v1_14_R1.Container.windowId to java.lang.Integer
at net.wesjd.anvilgui.version.Wrapper1_14_R1.setActiveContainerId(Wrapper1_14_R1.java:81) ~[?:?]
at net.wesjd.anvilgui.AnvilGUI.openInventory(AnvilGUI.java:155) ~[?:?]
at net.wesjd.anvilgui.AnvilGUI.<init>(AnvilGUI.java:129) ~[?:?]
at net.wesjd.anvilgui.AnvilGUI.<init>(AnvilGUI.java:95) ~[?:?]
at nl.thewgbbroz.dtltraders.custominventory.GUITextInputService.openTextGUI(GUITextInputService.java:90) ~[?:?]
at nl.thewgbbroz.dtltraders.adminguis.ShopEditService.editShopName(ShopEditService.java:759) ~[?:?]
at nl.thewgbbroz.dtltraders.adminguis.ShopEditService$2.onClick(ShopEditService.java:239) ~[?:?]
at nl.thewgbbroz.dtltraders.custominventory.DumbCustomInventoryService.onInventoryClickEvent(DumbCustomInventoryService.java:66) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor152.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.14.4.jar:git-Paper-233]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.14.4.jar:git-Paper-233]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.14.4.jar:git-Paper-233]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2310) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:1029) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:1022) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(IAsyncTaskHandler.java:95) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:1158) ~[patched_1.14.4.jar:git-Paper-233]
at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:925) ~[patched_1.14.4.jar:git-Paper-233]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.IllegalAccessException: Can not set final int field net.minecraft.server.v1_14_R1.Container.windowId to java.lang.Integer
at jdk.internal.reflect.UnsafeFieldAccessorImpl.throwFinalFieldIllegalAccessException(UnsafeFieldAccessorImpl.java:76) ~[?:?]
at jdk.internal.reflect.UnsafeFieldAccessorImpl.throwFinalFieldIllegalAccessException(UnsafeFieldAccessorImpl.java:80) ~[?:?]
at jdk.internal.reflect.UnsafeQualifiedIntegerFieldAccessorImpl.set(UnsafeQualifiedIntegerFieldAccessorImpl.java:79) ~[?:?]
at java.lang.reflect.Field.set(Field.java:780) ~[?:?]
at net.wesjd.anvilgui.version.Wrapper1_14_R1.setActiveContainerId(Wrapper1_14_R1.java:79) ~[?:?]