Fatal error: Uncaught mysqli_sql_exception: Expression #1 of ORDER BY clause is not in SELECT list, references column 'db1119767-alles.personen.Geburtsdatum' which is not in SELECT list; this is incompatible with DISTINCT in /is/htdocs/wp1119767_T3331V8QDT/www/von-rauchhaupt/LibPers.php:19 Stack trace: #0 /is/htdocs/wp1119767_T3331V8QDT/www/von-rauchhaupt/LibPers.php(19): mysqli->query('SELECT DISTINCT...') #1 /is/htdocs/wp1119767_T3331V8QDT/www/von-rauchhaupt/FrmTreeNew.php(30): get_kids_id('1776') #2 /is/htdocs/wp1119767_T3331V8QDT/www/von-rauchhaupt/FrmTreeNew.php(131): writePersonLine('1776', 1) #3 {main} thrown in /is/htdocs/wp1119767_T3331V8QDT/www/von-rauchhaupt/LibPers.php on line 19