STB errors while server is running

[07:22:30 ERROR]: Could not pass event PlayerInteractEvent to SensibleToolbox v1.0.7
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.craftbukkit.v1_8_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:227) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.PlayerInteractManager.interact(PlayerInteractManager.java:463) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.PlayerConnection.a(PlayerConnection.java:740) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_45]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_45]
        at net.minecraft.server.v1_8_R2.SystemUtils.a(SourceFile:60) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.MinecraftServer.A(MinecraftServer.java:712) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.DedicatedServer.A(DedicatedServer.java:368) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.MinecraftServer.z(MinecraftServer.java:651) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java:554) [spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
Caused by: java.lang.IllegalArgumentException: Cannot set property BlockStateInteger{name=age, clazz=class java.lang.Integer, values=[0, 1, 2, 3, 4, 5, 6, 7]} to 8 on block minecraft:wheat, it is not an allowed value
        at net.minecraft.server.v1_8_R2.BlockStateList$BlockData.set(SourceFile:124) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at net.minecraft.server.v1_8_R2.BlockCrops.fromLegacyData(BlockCrops.java:149) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.craftbukkit.v1_8_R2.block.CraftBlock.setData(CraftBlock.java:107) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at org.bukkit.craftbukkit.v1_8_R2.block.CraftBlock.setData(CraftBlock.java:92) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        at me.mrCookieSlime.sensibletoolbox.items.WateringCan.maybeGrowCrop(WateringCan.java:269) ~[?:?]
        at me.mrCookieSlime.sensibletoolbox.items.WateringCan.waterCrops(WateringCan.java:256) ~[?:?]
        at me.mrCookieSlime.sensibletoolbox.items.WateringCan.onInteractItem(WateringCan.java:117) ~[?:?]
        at me.mrCookieSlime.sensibletoolbox.listeners.GeneralListener.onPlayerInteract(GeneralListener.java:69) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor239.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_45]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_45]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8.3.jar:git-Spigot-870264a-0a645a2]
        ... 17 more