PHP Error

In shopping-feed/src/Product there is a mistake in the code which makes the editing of products impossible when Yoast SEO is enabled private function set_category() { $return = ''; $term = ShoppingFeedHelper::wc_category_taxonomy(); if ( class_exists( 'WPSEO_Primary_Term' ) ) { // Show Primary category by Yoast if it is enabled & set $wpseo_primary_term = new WPSEO_Primary_Term( $term, $this->id ); The problem is that this file is namespaced and the WPSEO_Primary_Term is not thus it’s looking for it in the local namespace (and not the global one) and obviously it doesn’t find it PHP Fatal error: Uncaught Error: Class 'ShoppingFeed\\ShoppingFeedWC\\Products\\WPSEO_Primary_Term' not found in ... It needs a slash in front: private function set_category() { $return = ''; $term = ShoppingFeedHelper::wc_category_taxonomy(); if ( class_exists( '\WPSEO_Primary_Term' ) ) { // Show Primary category by Yoast if it is enabled & set $wpseo_primary_term = new \WPSEO_Primary_Term( $term, $this->id ); Or a use \WPSEO_Primary_Term; at the top of the file