17:13:02 [ERROR] Could not pass event ProjectileHitEvent to BowEffects v3.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callProjectileHitEvent(CraftEventFactory.java:745) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.EntityProjectile.s_(EntityProjectile.java:156) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.World.entityJoinedWorld(World.java:1604) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.World.g(World.java:1579) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.World.tickEntities(World.java:1422) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.WorldServer.tickEntities(WorldServer.java:576) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:772) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_75]
Caused by: java.lang.NullPointerException
        at me.jeroenhero123.BowEffects.BowListener.onBowLand(BowListener.java:224) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor968.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_75]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_75]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8.jar:git-Spigot-c3c767f-33d5de3]
        ... 14 more