Why im getting error in this code ?

I'm creating a mini hunger games plugin but
I get an error when creating the arena


----------------------------------------
CODE:

Code:

            if (args.length == 2 && args[0].equalsIgnoreCase("yarat")){
                saveConfig();
                getConfig().set("Arenas.", args[1]);
                saveConfig();
                sender.sendMessage(prefix + ChatColor.GOLD + args[1] +ChatColor.DARK_GRAY +  "The Arena Has Been Added!");
                return true;
            }

 

What is your error?

 

Eror is arena does not creating

 

@CrossBowerMan
My guess would be that "Arenas." is an invalid path, and therefor it might throw an error. But YAML may have an auto-fix for it, but I'm not sure. Also, why are you saving the config twice? I recommend only calling saveConfig() in onDisable(), because each time you call saveConfig() it opens a new file stream which is not very efficient.

 

Is there a stacktrace?

 

@CrossBowerMan Why do you save, set, save? Why not just set and save?

 

But if the server crashes everything is gone..

 

@FisheyLP
The server shouldn't crash as long as you don't make silly mistakes or create a lag machine.

 

@megamichiel
That's a somewhat bad way to handle saving things in the config lol. Unless you're saving something like every second, it won't be too big of a toll on the server. Also, you should always expect the unexpected. Although it's not likely, servers will still randomly crash due to multiple reasons.