Having issues drawing image on screen

[Alakazizam]

Started playing with making a UI and I'm looking through this tutorial

 

 

I've declared the image at the top with

BufferedImage background;

 

The error comes from when I try to read the image and set the variable onStart with

	try{
            background = ImageIO.read(AKsSlayer.class.getResourceAsStream("/resources/background.png"));
        } catch(IOException e){
            log(e);
        }

 

It stops script and gives me a 'at javax.imageio.ImageIO.read(Unknown Source)' error in the log. The directory is there and so is the image, it is named correctly. Not sure if I'm supposed to do more than just drag and drop it in the folder?