[02:38:43] [Server thread/WARN]: [HolographicDisplays] Task #282 for HolographicDisplays v2.1.2 generated an exception
java.lang.NoSuchMethodError: org.bukkit.Server._INVALID_getOnlinePlayers()[Lorg/bukkit/entity/Player;
	at org.bukkit.Bukkit.getOnlinePlayers(Bukkit.java:119) ~[spigot.jar:git-Spigot-081dfa5-373090f]
	at com.gmail.filoghost.holographicdisplays.placeholder.PlaceholdersRegister$1.update(PlaceholdersRegister.java:28) ~[?:?]
	at com.gmail.filoghost.holographicdisplays.placeholder.Placeholder.update(Placeholder.java:64) ~[?:?]
	at com.gmail.filoghost.holographicdisplays.placeholder.PlaceholdersManager$1.run(PlaceholdersManager.java:51) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot.jar:git-Spigot-081dfa5-373090f]
	at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot.jar:git-Spigot-081dfa5-373090f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:694) [spigot.jar:git-Spigot-081dfa5-373090f]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot.jar:git-Spigot-081dfa5-373090f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:623) [spigot.jar:git-Spigot-081dfa5-373090f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:526) [spigot.jar:git-Spigot-081dfa5-373090f]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_20]