[16:17:31 ERROR]: Could not pass event EntityDamageByEntityEvent to SurvivalPlus v3.9.0
java.lang.NullPointerException: null
        at tk.shanebee.survival.listeners.Valkyrie.onAttack(Valkyrie.java:95) ~[?:?]
        at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:37) ~[patched_1.15.2.jar:git-Paper-77]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:76) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.event.CraftEventFactory.callEvent(CraftEventFactory.java:232) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:994) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:881) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:837) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:1026) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.EntityLiving.damageEntity0(EntityLiving.java:1691) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.EntityLiving.damageEntity(EntityLiving.java:1049) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.EntityMonster.damageEntity(EntityMonster.java:52) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.EntityZombie.damageEntity(EntityZombie.java:318) ~[patched_1.15.2.jar:git-Paper-77]
        at org.bukkit.craftbukkit.v1_15_R1.entity.CraftLivingEntity.damage(CraftLivingEntity.java:310) ~[patched_1.15.2.jar:git-Paper-77]
        at org.mcmonkey.sentinel.SentinelWeaponHelper.punch(SentinelWeaponHelper.java:252) ~[?:?]
        at org.mcmonkey.sentinel.SentinelAttackHelper.tryAttackInternal(SentinelAttackHelper.java:323) ~[?:?]
        at org.mcmonkey.sentinel.SentinelAttackHelper.tryAttack(SentinelAttackHelper.java:104) ~[?:?]
        at org.mcmonkey.sentinel.SentinelTrait.runUpdate(SentinelTrait.java:1279) ~[?:?]
        at org.mcmonkey.sentinel.SentinelTrait.run(SentinelTrait.java:1484) ~[?:?]
        at net.citizensnpcs.api.npc.AbstractNPC.update(AbstractNPC.java:431) ~[?:?]
        at net.citizensnpcs.npc.CitizensNPC.update(CitizensNPC.java:311) ~[?:?]
        at net.citizensnpcs.nms.v1_15_R1.entity.EntityHumanNPC.tick(EntityHumanNPC.java:439) ~[?:?]
        at net.minecraft.server.v1_15_R1.WorldServer.entityJoinedWorld(WorldServer.java:734) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.World.a(World.java:878) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.WorldServer.doTick(WorldServer.java:497) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1245) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:423) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112) ~[patched_1.15.2.jar:git-Paper-77]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934) ~[patched_1.15.2.jar:git-Paper-77]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]