[19:28:27] [Server thread/WARN]: [HorseRacingPlus] Task #54933 for HorseRacingPlus v1.3.1 generated an exception
java.lang.NullPointerException
	at com.comze_instancelabs.horseracingplus.ArenaSystem.countdownfunc(ArenaSystem.java:157) ~[?:?]
	at com.comze_instancelabs.horseracingplus.Main$13.run(Main.java:1086) ~[?:?]
	at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53) ~[server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [server.jar:git-Bukkit-1.7.2-R0.2-13-g4a588b7-b2989jnks]