Solved Whats wrong?

Whats wrong with this code. There is no Line where the error in the console.
But I know its this class, because when I make it inactive it does not crash

Here is the crash:

HTML:

[18:09:42] [Server thread/INFO]: [KitPVP] Enabling KitPVP v1.0
[18:09:42] [Server thread/ERROR]: Error occurred while enabling KitPVP v1.0 (Is it up to date?)
java.lang.NullPointerException
    at me.albinmedoc.pvp.Events.Interact2.<init>(Interact2.java:21) ~[?:?]
    at me.albinmedoc.pvp.Main.RegisterEvents(Main.java:56) ~[?:?]
    at me.albinmedoc.pvp.Main.onEnable(Main.java:29) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:524) [spigot_server.jar:git-Spigot-fdc1440-53fac9f]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]
[18:09:42] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[18:09:42] [Server thread/INFO]: Done (3,084s)! For help, type "help" or "?"

Code:

public class Interact2 implements Listener {

    KitsManager kitmanager = new KitsManager(Main.plugin);
    FileConfiguration config    = Main.plugin.getConfig();
    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent event){
        Player player = event.getPlayer();
        if (event.getAction() == Action.RIGHT_CLICK_BLOCK) {
            Block b = event.getClickedBlock();
            if((b.getType() == Material.SIGN_POST) || b.getType() == Material.WALL_SIGN){
                Sign s = (Sign) b.getState();
                if(s.getLine(1).equals(ChatColor.RED + "[KIT]")){
                    if(kitmanager.kitexist(s.getLine(2).toLowerCase())){
                        kitmanager.giveKit(player, s.getLine(2).toLowerCase());
                    }
                }else if(s.getLine(1).equals(ChatColor.RED + "[RandomLoc]")){
                    Listeners.randomloc(player);
                }
            }
        }
    }
}

Sorry, I know the error, Its the config...

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

 

You should pass around a instance of the main class instead of having it static

 

A couple of things I noticed that require your attention:
1. Do not abuse static!!!
2. Encapsulate
3. I wouldn't recomend naming classes like "listener" and "listener2" because although it doesn't affect performance, it is not old as a convention.
4. Follow java naming conventions!