Global Market Error

17.07 17:01:13 [Server] WARN Exception in thread "Craft Scheduler Thread - 530"
17.07 17:01:13 [Server] WARN org.apache.commons.lang.UnhandledException: Plugin GlobalMarket v1.2.2 generated an exception while executing task 77
17.07 17:01:13 [Server] INFO at org.bukkit.craftbukkit.v1_9_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
17.07 17:01:13 [Server] INFO at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
17.07 17:01:13 [Server] INFO at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
17.07 17:01:13 [Server] INFO at java.lang.Thread.run(Thread.java:745)
17.07 17:01:13 [Server] INFO Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
17.07 17:01:13 [Server] INFO at com.survivorserver.GlobalMarket.MetricsLite.postPlugin(MetricsLite.java:285)
17.07 17:01:13 [Server] INFO at com.survivorserver.GlobalMarket.MetricsLite.access$200(MetricsLite.java:51)
17.07 17:01:13 [Server] INFO at com.survivorserver.GlobalMarket.MetricsLite$1.run(MetricsLite.java:173)
17.07 17:01:13 [Server] INFO at org.bukkit.craftbukkit.v1_9_R2.scheduler.CraftTask.run(CraftTask.java:71)
17.07 17:01:13 [Server] INFO at org.bukkit.craftbukkit.v1_9_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
17.07 17:01:13 [Server] INFO ... 3 more