Epic Furnace 4.4.4.4

[2019-08-31 15:34:43] [Server thread/ERROR]: Error occurred while enabling EpicFurnaces v4.4.4 (Is it up to date?)[2019-08-31 15:34:43]: java.lang.NullPointerException: null[2019-08-31 15:34:43]: at com.songoda.epicfurnaces.economy.VaultEconomy.<init>(VaultEconomy.java:11) ~[?:?][2019-08-31 15:34:43]: at com.songoda.epicfurnaces.EpicFurnaces.onEnable(EpicFurnaces.java:115) ~[?:?][2019-08-31 15:34:43]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:352) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:417) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugin(CraftServer.java:461) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugins(CraftServer.java:375) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:449) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:266) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f][2019-08-31 15:34:43]: at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:775) [spigot-R0.1-065a3734e85-96bc85f0b45-ff0672ca667.jar:git-Spigot-065a373-96bc85f]
[2019-08-31 15:34:43]: at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]