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Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/gen/datenbank.php:1) in /var/www/html/gen/datenbank.php on line 4

Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /var/www/html/gen/connect.php:13 Stack trace: #0 /var/www/html/gen/meta_langinputconf.php(3): include() #1 /var/www/html/gen/datenbank.php(16): include('/var/www/html/g...') #2 {main} thrown in /var/www/html/gen/connect.php on line 13