minecraft uskyblock error

[15:27:01] [Server thread/ERROR]: Error occurred while enabling uSkyBlock v2.7.2 (Is it up to date?)
java.lang.NullPointerException
	at us.talabrek.ultimateskyblock.menu.StringEditMenu.<init>(StringEditMenu.java:43) ~[?:?]
	at us.talabrek.ultimateskyblock.menu.ConfigMenu.<init>(ConfigMenu.java:32) ~[?:?]
	at us.talabrek.ultimateskyblock.uSkyBlock.reloadConfigs(uSkyBlock.java:997) ~[?:?]
	at us.talabrek.ultimateskyblock.uSkyBlock.onEnable(uSkyBlock.java:212) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:292) ~[Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.loadPlugin(CraftServer.java:361) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.enablePlugins(CraftServer.java:321) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.reload(CraftServer.java:744) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.Bukkit.reload(Bukkit.java:539) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:645) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchServerCommand(CraftServer.java:631) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.DedicatedServer.aL(DedicatedServer.java:438) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:401) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [Spigot.jar:git-Spigot-e000104-4cb3258]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]