Hỏi đáp Plugin tương tự Pl3xicons

[10:46:37] [INFO]: [Pl3xIcons] Enabling Pl3xIcons v1.1
[10:46:37] [INFO]: [PlaceholderAPI] Successfully registered expansion: pl3xicons
[10:46:37] [Thread-28/INFO]: [Pl3xIcons] Pl3xIcons v1.1 enabled!
[10:46:37] [Craft Scheduler Thread - 489/WARN]: [Pl3xIcons] Plugin Pl3xIcons v1.1 generated an exception while executing task 394670
java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
   at net.pl3x.bukkit.pl3xicons.Metrics.postPlugin(Metrics.java:335) ~[?:?]
   at net.pl3x.bukkit.pl3xicons.Metrics.access$400(Metrics.java:57) ~[?:?]
   at net.pl3x.bukkit.pl3xicons.Metrics$1.run(Metrics.java:223) ~[?:?]
   at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.10.2.jar:git-Spigot-72c2605-251a5b6]
   at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [spigot-1.10.2.jar:git-Spigot-72c2605-251a5b6]
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_161-heroku]
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_161-heroku]
   at java.lang.Thread.run(Thread.java:748) [?:1.8.0_161-heroku]