Fatal error: Uncaught Error: Undefined constant "SHOP_URL" in C:\xampp\htdocs\intranet_api\prestashop\articulo_alta.php:12 Stack trace: #0 C:\xampp\htdocs\intranet_api\prestashop\articulo_alta.php(55): callAPI('POST', 'products', Array) #1 {main} thrown in C:\xampp\htdocs\intranet_api\prestashop\articulo_alta.php on line 12