SimplePluginManager

[04:55:18] [Server thread/ERROR]: Could not pass event BlockBreakEvent to Momoadditions v${project.version}
org.bukkit.event.EventException: null
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:66) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PlayerInteractManager.breakBlock(PlayerInteractManager.java:292) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PlayerInteractManager.a(PlayerInteractManager.java:193) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1146) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PacketPlayInBlockDig.a(SourceFile:40) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PacketPlayInBlockDig.a(SourceFile:10) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:9) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_201]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_201]
    at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:896) [spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [spigot.jar:git-Spigot-f09662d-7c395d4]
    at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [spigot.jar:git-Spigot-f09662d-7c395d4]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.NullPointerException
    at com.chrismin13.additionsapi.items.CustomItemStack.<init>(CustomItemStack.java:103) ~[?:?]
    at com.vibrantrida.momoadditions.items.BellflowerItemStack.<init>(BellflowerItemStack.java:7) ~[?:?]
    at com.vibrantrida.momoadditions.listeners.BlockBreakListener.onBlockBreak(BlockBreakListener.java:31) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_201]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_201]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_201]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_201]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:312) ~[spigot.jar:git-Spigot-f09662d-7c395d4]
    ... 17 more