Config

[22:46:53 INFO]: [MultiSkyWars] Enabling MultiSkyWars v2.5.1
[22:46:54 WARN]: [MultiSkyWars] Could not save swConfig.yml to plugins\MultiSkyWars\swConfig.yml because swConfig.yml already exists.
[22:46:54 INFO]: DataSourcePool [jdbcsqlitepluginsMultiSkyWarsMultiSkyWarsdb] autoCommit[false] transIsolation[SERIALIZABLE] min[2] max[20]
[22:46:54 INFO]: SubClassFactory parent ClassLoader [org.bukkit.plugin.java.PluginClassLoader]
[22:46:54 INFO]: Entities enhanced[0] subclassed[2]
[22:46:55 ERROR]: Error occurred while enabling MultiSkyWars v2.5.1 (Is it up to date?)
java.lang.NullPointerException
        at es.minetsii.skywars.utils.WorldUtils.loadWorld(WorldUtils.java:67) ~[?:?]
        at es.minetsii.skywars.managers.ArenaManager.regenMultiSkyWarsWorld(ArenaManager.java:47) ~[?:?]
        at es.minetsii.skywars.managers.ArenaManager.load(ArenaManager.java:32) ~[?:?]
        at es.minetsii.skywars.utils.ManagerUtils.addManager(ManagerUtils.java:54) ~[?:?]
        at es.minetsii.skywars.utils.ManagerUtils.loadDefManagersAfterCache(ManagerUtils.java:44) ~[?:?]
        at es.minetsii.skywars.utils.CacheUtils.load(CacheUtils.java:16) ~[?:?]
        at es.minetsii.skywars.SkyWars.onEnable(SkyWars.java:35) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_92]