Uncaught Error: Class "Routeur" not found in - php

Question

I found that error when I test my site in xampp. Uncaught Error: Class "Routeur" not found in (my route)
index:
<?php
session_start();
define("RACINE", $_SERVER["DOCUMENT_ROOT"] . "/projetWebII/");
define("RACINEWEB", "http://" . $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . "/projetWebII/");
function mon_autoloader($classe)
{
$repertoires = array(RACINE . "controleurs/", RACINE . "modeles/", RACINE . "vues/");
foreach($repertoires as $rep)
{
if(file_exists($rep . $classe . ".php"))
{
require_once($rep . $classe . ".php");
return;
}
}
}
spl_autoload_register("mon_autoloader");
Routeur::route();
?>
The file that contains the class is Routeur.php
<?php
class Routeur
{
public static function route()
{
$chaineRequete = $_SERVER["QUERY_STRING"];
$posEperluette = strpos($chaineRequete, "&");
$controleur = substr($chaineRequete, 0, $posEperluette);
if($controleur != "")
{
$classe = "Controleur_" . $controleur;
}
else
{
$classe = "Controleur_Boutique";
}
if(class_exists($classe))
{
$objetControleur = new $classe;
$objetControleur->traite($_REQUEST);
}
else
{
die("Erreur 404! Le controleur n'existe pas.");
}
}
}
?>
any idea about hou to solve it ???? Thanks!!!!
I cant see my file, any sugestion?