GroupManager插件报错看不懂。。。有没有懂的麻烦赐教。谢谢


[00:38:39] [Server thread/INFO]: GroupManager - INFO - Bukkit Permissions Updated!
[00:38:39] [Craft Scheduler Thread - 0/WARN]: Exception in thread "Craft Scheduler Thread - 0"
[00:38:39] [Craft Scheduler Thread - 0/WARN]: org.apache.commons.lang.UnhandledException: Plugin Vault v1.5.2-b33 generated an exception while executing task 3
        at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()Ljava/util/Collection;
        at net.milkbowl.vault.Metrics.postPlugin(Metrics.java:387)
        at net.milkbowl.vault.Metrics.access$400(Metrics.java:63)
        at net.milkbowl.vault.Metrics$4.run(Metrics.java:275)
        at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:58)
        at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more

GroupManager的版本和你使用的bukkit的版本不对应，
这个方法原本返回的是Player[]
新一些版本返回的是Collection<Player>