Fatal error: Uncaught Error: Class "XmlResourceRetriever\AbstractBaseRetriever" not found in C:\xampp\htdocs\api_kpl\vendor\eclipxe\xmlresourceretriever\src\XmlResourceRetriever\AbstractXmlRetriever.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\api_kpl\vendor\eclipxe\xmlresourceretriever\src\XmlResourceRetriever\AbstractXmlRetriever.php on line 16