Hi,

Try to add the following PHP code snippet to the child theme functions.php file to fix this

function woodmart_get_active_variations( $attribute_name, $available_variations ) {
		$results = array();

		if ( ! $available_variations ) {
			return $results;
		}

		foreach ( $available_variations as $variation ) {
			$attr_key = 'attribute_' . $attribute_name;
			if ( isset( $variation['attributes'][ $attr_key ] ) ) {
				$results[] = $variation['attributes'][ $attr_key ];
			}
		}

		return $results;
	}