Trying to use a barcode library with Composer and CI4

PHP Code:

$generator = new \Picqer\Barcode\BarcodeGeneratorPNG(); 


It miss \

Wow, it was just that ... It worked!
Thanks @Paradinight

If you use "use" you can do:

use Picqer\Barcode\BarcodeGeneratorPNG;

$generator = new BarcodeGeneratorPNG();

or


use Picqer\Barcode\BarcodeGeneratorPNG as AnOtherName;

$generator = new AnOtherName();