DragonHunter v1.1

Error occurred while enabling DragonHunter v1.1 (Is it up to date?)
java.lang.NullPointerException
    at me.ByteMagic.DragonRespawner.Tasks.DragonRespawnTask.<init>(DragonRespawnTask.java:34) ~[?:?]
    at me.ByteMagic.DragonRespawner.Main.registerTasks(Main.java:87) ~[?:?]
    at me.ByteMagic.DragonRespawner.Main.onEnable(Main.java:70) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:271) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugin(CraftServer.java:376) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugins(CraftServer.java:326) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at net.minecraft.server.v1_11_R1.MinecraftServer.t(MinecraftServer.java:421) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at net.minecraft.server.v1_11_R1.MinecraftServer.l(MinecraftServer.java:382) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at net.minecraft.server.v1_11_R1.MinecraftServer.a(MinecraftServer.java:337) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:272) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:544) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]