Fatal error: Uncaught Error: Call to a member function close() on null in D:\www\www469\webassist\mysqli\rsobj.php:226
Stack trace:
#0 D:\www\www469\veranstaltungen\veranstaltung.php(7): WA_MySQLi_RS->execute()
#1 {main}
  thrown in D:\www\www469\webassist\mysqli\rsobj.php on line 226