[16:34:12 WARN]: [RBTV] Task #12 for RBTV v1.0 generated an exception
java.lang.IllegalArgumentException: bound must be positive
        at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_66]
        at me.ColdDev.FallingBlocks.Counter.GraceCounter$2.run(GraceCounter.java                                                   :58) ~[?:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java                                                   :71) ~[start.jar:git-Spigot-6c9b0a1-de5c261]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHea                                                   rtbeat(CraftScheduler.java:350) [start.jar:git-Spigot-6c9b0a1-de5c261]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:7                                                   22) [start.jar:git-Spigot-6c9b0a1-de5c261]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:3                                                   74) [start.jar:git-Spigot-6c9b0a1-de5c261]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:6                                                   53) [start.jar:git-Spigot-6c9b0a1-de5c261]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java                                                   :556) [start.jar:git-Spigot-6c9b0a1-de5c261]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66]