I'm getting "not up to date" errors on my server config, and don't know why, because I am using the latest version of both artifacts and normal mythicmobs. (1.12)
[15:47:27 ERROR]: Error occurred while enabling MythicMobs v4.3.2-SNAPSHOT (Is it up to date?) java.lang.NullPointerException: null at org.bukkit.configuration.file.YamlConfiguration.convertMapsToSections(YamlConfiguration.java:73) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:67) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:162) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:130) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:179) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at io.lumine.xikage.mythicmobs.io.IOLoader.reloadCustomConfig(IOLoader.java:69) ~[?:?] at io.lumine.xikage.mythicmobs.io.IOLoader.<init>(IOLoader.java:44) ~[?:?] at io.lumine.xikage.mythicmobs.skills.SkillManager.loadSkills(SkillManager.java:36) ~[?:?] at io.lumine.xikage.mythicmobs.io.ConfigManager.LoadAll(ConfigManager.java:92) ~[?:?] at io.lumine.xikage.mythicmobs.MythicMobs.onEnable(MythicMobs.java:138) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:402) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:374) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:323) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:421) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:382) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:337) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:544) [spigot-1.12.jar:git-Spigot-596221b-9a1fc1e] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]