Fatal error: Uncaught ArgumentCountError: mysqli_query() expects at least 2 arguments, 1 given in /customers/4/2/0/matematikbanken.dk/httpd.www/matchamp/index.php:17
Stack trace:
#0 /customers/4/2/0/matematikbanken.dk/httpd.www/matchamp/index.php(17): mysqli_query('set names utf8;')
#1 {main}
  thrown in /customers/4/2/0/matematikbanken.dk/httpd.www/matchamp/index.php on line 17