Could not pass event MobHuntKillEvent to MobHunting v6.7.2 java.lang.NullPointerException: null at one.lindegaard.MobHunting.achievements.AchievementManager.awardAchievement(AchievementManager.java:404) ~[?:?] at one.lindegaard.MobHunting.achievements.AchievementManager.awardAchievementProgress(AchievementManager.java:533) ~[?:?] at one.lindegaard.MobHunting.achievements.EighthHuntAchievement.onKillCompleted(EighthHuntAchievement.java:92) ~[?:?] at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor839.execute(Unknown Source) ~[?:?] at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.14.3.jar:git-Paper-122] at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.14.3.jar:git-Paper-122] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.14.3.jar:git-Paper-122] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:536) ~[patched_1.14.3.jar:git-Paper-122] at one.lindegaard.MobHunting.MobHuntingManager.onMobDeath(MobHuntingManager.java:1498) ~[?:?] at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:37) ~[patched_1.14.3.jar:git-Paper-122] at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.14.3.jar:git-Paper-122] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.14.3.jar:git-Paper-122] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:536) ~[patched_1.14.3.jar:git-Paper-122] at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:741) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityLiving.d(EntityLiving.java:1416) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityLiving.die(EntityLiving.java:1354) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityLiving.damageEntity(EntityLiving.java:1198) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityMonster.damageEntity(EntityMonster.java:56) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityZombie.damageEntity(EntityZombie.java:280) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityPigZombie.damageEntity(EntityPigZombie.java:138) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityArrow.a(EntityArrow.java:375) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityArrow.a(EntityArrow.java:287) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityArrow.tick(EntityArrow.java:198) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.EntityTippedArrow.tick(EntityTippedArrow.java:87) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.WorldServer.entityJoinedWorld(WorldServer.java:579) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.World.a(World.java:933) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:354) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1192) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:420) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:1064) ~[patched_1.14.3.jar:git-Paper-122] at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:908) ~[patched_1.14.3.jar:git-Paper-122] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]

Running on Papermc 1.14.3.
I have installed mcmmo、Essentials、Citizens2 .All of thems are lateset version

Please try to disable achievments in config.yml

And let me know if this works?

And let me know if this works?

Yes.It works.

Thank. Unfortunately it seems that Paper does hot have the Achievements API, so I will have to disable this automatically in next version.

Thank you for your help.