Hi, we have the same problem, it’s about malformed query generated by method “get_products” in class.yith-wcwl.php
I have fixed as follow the method:
Line 620-633:
if( ! empty( $id ) ){
$sql .= " AND <code>i.ID</code> = %d";
$sql_args[] = $id;
}
$sql .= " GROUP BY i.prod_id, l.ID";
if( ! empty( $limit ) ){
$sql .= " LIMIT " . $offset . ", " . $limit;
}
$wishlist = $wpdb->get_results( $wpdb->prepare( $sql, $sql_args ), ARRAY_A );
Complete File
Ciao 😀