[12:29:03 ERROR]: Could not pass event BlockPlaceEvent to Challenges v1.6
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:309) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:196) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.ItemStack.placeItem(ItemStack.java:209) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.PlayerInteractManager.a(PlayerInteractManager.java:505) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1237) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseItem.a(PacketPlayInUseItem.java:37) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseItem.a(PacketPlayInUseItem.java:1) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.a(SourceFile:10) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_191]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_191]
        at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:895) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:830) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:728) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
        at java.lang.Thread.run(Unknown Source