Dogecraft error

00:58:34 [INFO] This server is running CraftBukkit version git-Bukkit-1.6.4-R2.0-b2918jnks (MC: 1.6.4) (Implementing API version 1.6.4-R2.0)
00:58:35 [SEVERE] Could not load 'plugins/dogecraft.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: Vault
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:195)
    at org.bukkit.craftbukkit.v1_6_R3.CraftServer.loadPlugins(CraftServer.java:241)
    at org.bukkit.craftbukkit.v1_6_R3.CraftServer.<init>(CraftServer.java:219)
    at net.minecraft.server.v1_6_R3.PlayerList.<init>(PlayerList.java:56)
    at net.minecraft.server.v1_6_R3.DedicatedPlayerList.<init>(SourceFile:11)
    at net.minecraft.server.v1_6_R3.DedicatedServer.init(DedicatedServer.java:107)
    at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:393)
    at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)