Fatal error: Uncaught ArgumentCountError: mysqli_query() expects at least 2 arguments, 1 given in /home/transiti/www/planning/index.php:56 Stack trace: #0 /home/transiti/www/planning/index.php(56): mysqli_query('SET NAMES utf8') #1 {main} thrown in /home/transiti/www/planning/index.php on line 56