[00:26:33 FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.ClassCastException: net.minecraft.server.v1_9_R1.ItemStack cannot be cast to java.lang.Float
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_66]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_66]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:46) [spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66]
Caused by: java.lang.ClassCastException: net.minecraft.server.v1_9_R1.ItemStack cannot be cast to java.lang.Float
	at net.minecraft.server.v1_9_R1.RecipesFurnace.b(RecipesFurnace.java:135) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.SlotFurnaceResult.c(SlotFurnaceResult.java:44) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.SlotFurnaceResult.a(SlotFurnaceResult.java:31) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.Container.a(Container.java:307) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1857) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_66]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_66]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) ~[spigot-1.9.2.jar:git-Spigot-e000104-4cb3258]
	... 5 more