Error

[13:08:22 INFO]: Stan_K_YT issued server command: /mvp create Test
[13:08:22 INFO]: WEAPI
[13:08:22 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'mvp' in plugin Multiverse-Portals v2.5-b584
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:650) ~[craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1344) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1179) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_121]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_121]
        at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [craftbukkit.jar:git-Spigot-4741400-a1d3777]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
        at com.onarandombox.MultiversePortals.MVPortal.addToUpperLists(MVPortal.java:172) ~[?:?]
        at com.onarandombox.MultiversePortals.MVPortal.init(MVPortal.java:99) ~[?:?]
        at com.onarandombox.MultiversePortals.MVPortal.<init>(MVPortal.java:62) ~[?:?]
        at com.onarandombox.MultiversePortals.MVPortal.<init>(MVPortal.java:234) ~[?:?]
        at com.onarandombox.MultiversePortals.utils.PortalManager.addPortal(PortalManager.java:126) ~[?:?]
        at com.onarandombox.MultiversePortals.commands.CreateCommand.runCommand(CreateCommand.java:62) ~[?:?]
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.checkAndRunCommand(CommandHandler.java:279) ~[?:?]
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.processFoundCommands(CommandHandler.java:143) ~[?:?]
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.locateAndRunCommand(CommandHandler.java:93) ~[?:?]
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.locateAndRunCommand(CommandHandler.java:71) ~[?:?]
        at com.onarandombox.MultiversePortals.MultiversePortals.onCommand(MultiversePortals.java:327) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Spigot-4741400-a1d3777]
        ... 15 more