[00:00:00 WARN]: [AutoShutdown] Task #12091 for AutoShutdown v3.2.1-1.5.1 genera
ted an exception
java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/en
tity/Player;
        at net.stupendous.autoshutdown.AutoShutdownPlugin.kickAll(AutoShutdownPl
ugin.java:178) ~[?:?]
        at net.stupendous.autoshutdown.ShutdownTask$1.run(ShutdownTask.java:24)
~[?:?]
        at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java
:71) ~[spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-7d15d07-c194444]
        at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:350) [spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-
7d15d07-c194444]
        at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:7
24) [spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-7d15d07-c194444]
        at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:4
00) [spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-7d15d07-c194444]
        at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:6
55) [spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-7d15d07-c194444]
        at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java
:554) [spigot-1.9-R0.1-SNAPSHOT-latest.jar:git-Spigot-7d15d07-c194444]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]