Class not found Error, problem with namespaces

I'm new to Codeigniter 4 and am struggling with namespaces. I tried to create a helper php2jquery.php in App/Helpers I cannot load it the way I try it. This is wat I have now.

PHP Code:

<?php namespace App\Controllers;
use App\Helpers\php2jquery;
class Test extends BaseController
{

    public function index()
    {
        
        $param = “”; //Doesn’t matter here ;
        
        $jqueryparam = New php2jquery();
    
        $data[‘jqueryobject’] = $jqueryparam->php_array_to_jquery_param($param, 4, "new FWDRAP", "FWDRAPUtils.onReady(function(){" );
        
        $data['base'] = config('App')->baseURL;
        return view('test_message',$data);
    }

    //--------------------------------------------------------------------

}

————
File: App/Helpers/php2jquery.php  (Also tried App/Helpers/php2jquery_helper.php
__________
<?php
    class php2jquery
    {
        
        function php_array_to_jquery_param($param,$indent=0, $object="", $wrapfunction=""){
            Return (“this is a test”);
        }
} 


Now, when I run it I get "Error: Class App\Helpers\php2jquery not found" I tried adding _helper tot the name and call it with and without it, but no luck. Can somebody tell me what is wrong? Thank you