Bukkit

[19:27:31] [Craft Scheduler Thread - 67/WARN]: [GAListener] Plugin GAListener v1.3.2 generated an exception while executing task 346
java.lang.NoSuchMethodError: org.bukkit.Server._INVALID_getOnlinePlayers()[Lorg/bukkit/entity/Player;
	at com.swifteh.GAL.RewardTask.run(RewardTask.java:37) ~[?:?]
	at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:58) ~[patched_1.12.jar:git-Paper-1143]
	at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [patched_1.12.jar:git-Paper-1143]
	at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) [patched_1.12.jar:git-Paper-1143]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_131]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_131]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]

Here's mine.  I have no clue how to read this and where you find the problem.

14.08 11:30:00 [Server] WARN [GAListener] Plugin GAListener v1.3.2 generated an exception while executing task 28 14.08 11:30:00 [Server] INFO java.lang.NoSuchMethodError: org.bukkit.Server._INVALID_getOnlinePlayers()[Lorg/bukkit/entity/Player;

14.08 11:30:00 [Server] INFO at com.swifteh.GAL.Metrics.postPlugin(Metrics.java:335) ~[?:?]

14.08 11:30:00 [Server] INFO at com.swifteh.GAL.Metrics.access$4(Metrics.java:328) ~[?:?]

14.08 11:30:00 [Server] INFO at com.swifteh.GAL.Metrics$1.run(Metrics.java:223) ~[?:?]

14.08 11:30:00 [Server] INFO at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.12.1_8_8.jar:git-Spigot-5340a52-27b8bf9]

14.08 11:30:00 [Server] INFO at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [spigot-1.12.1_8_8.jar:git-Spigot-5340a52-27b8bf9]

14.08 11:30:00 [Server] INFO at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_131]

14.08 11:30:00 [Server] INFO at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_131]

14.08 11:30:00 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]