Minecraft FactionFlight Plugin (1.8 Server)

We are using FactionFlight Plugin and it does not work on our 1.8 server. The error message when we are running this plugin is:

Code:

28.04 14:44:41 [Server] ERROR Could not pass event PlayerMoveEvent to FactionFlight v1.5.6
28.04 14:44:41 [Server] INFO org.bukkit.event.EventException
28.04 14:44:41 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:273) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInFlying.a(SourceFile:126) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInFlying$PacketPlayInPosition.a(SourceFile:57) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_121]
28.04 14:44:41 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_121]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:771) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:710) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:613) [paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
28.04 14:44:41 [Server] INFO Caused by: java.lang.NoClassDefFoundError: com/massivecraft/factions/entity/UPlayer
28.04 14:44:41 [Server] INFO at com.canal.FactionFlight.FactionFlightListener.onPlayerMove(FactionFlightListener.java:35) ~[?:?]
28.04 14:44:41 [Server] INFO at sun.reflect.GeneratedMethodAccessor971.invoke(Unknown Source) ~[?:?]
28.04 14:44:41 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
28.04 14:44:41 [Server] INFO at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
28.04 14:44:41 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[paperspigot1.8.8.jar:git-PaperSpigot-881dfe0-de5c261]
28.04 14:44:41 [Server] INFO ... 15 more

Please help.

 

@RetronixCenter
Which one are you using;
This one?
Or this.