Error for Builder's Utilities

[18:51:40 ERROR]: Could not pass event InventoryCreativeEvent to BuildersUtilities v1.2.1
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298) ~[craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:498) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:483) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1965) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.PacketPlayInSetCreativeSlot.a(SourceFile:23) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.PacketPlayInSetCreativeSlot.a(SourceFile:9) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_112]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_112]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:696) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:371) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:651) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:555) [craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]
Caused by: java.lang.NoSuchMethodError: org.bukkit.event.inventory.InventoryClickEvent.getClickedInventory()Lorg/bukkit/inventory/Inventory;
        at com.buildersrefuge.utilities.listeners.ToggleInventoryListener.onInventoryClick(ToggleInventoryListener.java:30) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor515.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:296) ~[craftbukkit-1.12.1.jar:git-Bukkit-79e55b6]
        ... 15 more