What is wrong with my Kit Menu?

[Goatnator]

So i decided to make a kit gui menu and i started very basic,
i came up with this,
And i added it in the menu in the config like this:
gui_menus:
KitMenu:
file: KitMenu.yml

But the menu doesn't load in game. Can somebody help me please?
I'm using DeluxeMenus and Essentials for the kits
(Please note this is my first attempt to make a gui, no harm plez)

 

[Mooselk]

Ran it through this, http://yaml-online-parser.appspot.com/
Most likely incorrect spacing.

 

[Goatnator]

I ran it in a yaml checker earlier and found the problem, thank you both for helping me!