InfernalMobs Error

[18:08:19 WARN]: [InfernalMobs] Task #176 for InfernalMobs v4.9 generated an exception
java.lang.NullPointerException
        at io.hotmail.com.jacob_vejvoda.infernal_mobs.infernal_mobs.applyEffect(infernal_mobs.java:1284) ~[?:?]
        at io.hotmail.com.jacob_vejvoda.infernal_mobs.infernal_mobs$6.run(infernal_mobs.java:1334) ~[?:?]
        at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:741) [spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:672) [spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:571) [spigot-1.10.jar:git-Spigot-c55900f-9856d8a]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_74]