java.lang.NullPointerException with config

Error:

Code:

java.lang.NullPointerException
        at com.fexnetwork.listeners.MainListeners.<init>(MainListeners.java:29) ~[?:?]
        at com.fexnetwork.Main.onEnable(Main.java:23) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.reload(CraftServer.java:741) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.Bukkit.reload(Bukkit.java:535) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchServerCommand(CraftServer.java:627) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at net.minecraft.server.v1_8_R3.DedicatedServer.aO(DedicatedServer.java:412) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:375) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:653) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:556) [Spigot.jar:git-Spigot-fdc1440-53fac9f]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_151]

MainListeners Code(Line 27 to 40):

Code:

public class MainListeners implements Listener {
    FileConfiguration mainConfig = new Vars().config;
    ConfigurationSection arenaSection = mainConfig.getConfigurationSection("arena");
    ConfigurationSection arenaProtectS1 = arenaSection.getConfigurationSection("protection").getConfigurationSection("min");
    ConfigurationSection arenaProtectS2 = arenaSection.getConfigurationSection("protection").getConfigurationSection("s2");
    ConfigurationSection arenaBoundsSec1 = arenaSection.getConfigurationSection("bounds").getConfigurationSection("min");
    ConfigurationSection arenaBoundsSec2 = arenaSection.getConfigurationSection("bounds").getConfigurationSection("max");
    ConfigurationSection lobbySection = mainConfig.getConfigurationSection("lobby");
    ConfigurationSection lobbyBoundsSec1 = lobbySection.getConfigurationSection("bounds").getConfigurationSection("min");
    ConfigurationSection lobbyBoundsSec2 = lobbySection.getConfigurationSection("bounds").getConfigurationSection("max");
   
    ArrayList<Player> boundset = new ArrayList<Player>();
    ArrayList<Player> boundset2 = new ArrayList<Player>();
    ArrayList<Player> boundset4 = new ArrayList<Player>();
          ...

Loading Config(Start of function):

Code:

    void loadDefaultConfig() {
        getConfig().options().copyDefaults(true);
        saveDefaultConfig();
      ...

Start of config.yml:

 

The vars is a class that I can get main functions.

On main class


EDIT by Moderator: merged posts, please use the edit button instead of double posting.