Works
Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'GROUP BY projects.id_project ORDER BY If(contacts.dummyname_contact Is Not Null,' at line 11 in /home/ismapi/ictlogy.net/bibliography/reports/projects_list.php:236 Stack trace: #0 /home/ismapi/ictlogy.net/bibliography/reports/projects_list.php(236): mysqli_query(Object(mysqli), 'SELECT \ncross_c...') #1 {main} thrown in /home/ismapi/ictlogy.net/bibliography/reports/projects_list.php on line 236