Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /customers/8/3/7/dezwaluw.org/httpd.www/header.php on line 7

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /customers/8/3/7/dezwaluw.org/httpd.www/header.php on line 7

Fatal error: Uncaught ArgumentCountError: mysqli_error() expects exactly 1 argument, 0 given in /customers/8/3/7/dezwaluw.org/httpd.www/header.php:9
Stack trace:
#0 /customers/8/3/7/dezwaluw.org/httpd.www/header.php(9): mysqli_error()
#1 /customers/8/3/7/dezwaluw.org/httpd.www/fotos/tak.php(66): include('/customers/8/3/...')
#2 /customers/8/3/7/dezwaluw.org/httpd.www/fotos/4 Wolven/index.php(2): include('/customers/8/3/...')
#3 {main}
  thrown in /customers/8/3/7/dezwaluw.org/httpd.www/header.php on line 9