Warning: Undefined array key "HTTP_ACCEPT_LANGUAGE" in /home/httpd/vhosts/novamarketing.ch/httpdocs/include/variablen.php on line 24

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in /home/httpd/vhosts/novamarketing.ch/httpdocs/include/variablen.php:50
Stack trace:
#0 /home/httpd/vhosts/novamarketing.ch/httpdocs/include/variablen.php(50): mysqli_query(false, 'SET NAMES 'utf8...')
#1 /home/httpd/vhosts/novamarketing.ch/httpdocs/coins/coins.php(7): include('/home/httpd/vho...')
#2 {main}
  thrown in /home/httpd/vhosts/novamarketing.ch/httpdocs/include/variablen.php on line 50