18:06:33 [FATAL] No se pudo pasar el evento "cn.nukkit.event.entity.EntityDamageByEntityEvent" a "MRPGNPC v1.2.6": null en com.muffinhead.MRPGNPC.Events.MobNPCBeAttack
18:06:33 [ERROR] Throwing
cn.nukkit.utils.EventException: null
        at cn.nukkit.plugin.MethodEventExecutor.execute(MethodEventExecutor.java:34) ~[server.jar:?]
        at cn.nukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:56) ~[server.jar:?]
        at cn.nukkit.plugin.PluginManager.callEvent(PluginManager.java:543) [server.jar:?]
        at cn.nukkit.entity.Entity.attack(Entity.java:1099) [server.jar:?]
        at cn.nukkit.entity.EntityLiving.attack(EntityLiving.java:115) [server.jar:?]
        at cn.nukkit.entity.EntityHumanType.attack(EntityHumanType.java:177) [server.jar:?]
        at com.muffinhead.MRPGNPC.NPCs.MobNPC.attack(MobNPC.java:258) [MRPGNPC1.2.6.jar:?]
        at cn.nukkit.Player.handleDataPacket(Player.java:3303) [server.jar:?]
        at cn.nukkit.network.RakNetInterface.process(RakNetInterface.java:123) [server.jar:?]
        at cn.nukkit.network.Network.processInterfaces(Network.java:165) [server.jar:?]
        at cn.nukkit.Server.tick(Server.java:1164) [server.jar:?]
        at cn.nukkit.Server.tickProcessor(Server.java:940) [server.jar:?]
        at cn.nukkit.Server.start(Server.java:908) [server.jar:?]
        at cn.nukkit.Server.<init>(Server.java:589) [server.jar:?]
        at cn.nukkit.Nukkit.main(Nukkit.java:120) [server.jar:?]
Caused by: java.lang.NullPointerException: Cannot invoke "javax.script.ScriptEngine.eval(String)" because "se" is null
        at com.muffinhead.MRPGNPC.NPCs.NPC.readEntityParameters(NPC.java:1646) ~[?:?]
        at com.muffinhead.MRPGNPC.Events.MobNPCBeAttack.onDamaged(MobNPCBeAttack.java:58) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
        at cn.nukkit.plugin.MethodEventExecutor.execute(MethodEventExecutor.java:29) ~[server.jar:?]
        ... 14 more