Deprecated: Return type of XmlElement::asXML($filename = null, $humanReadable = true) should either be compatible with SimpleXMLElement::asXML(?string $filename = null): string|bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/fkiinteriors/public_html/wp-content/plugins/fancy-product-designer/admin/inc/svglib/xmlelement.php on line 428