Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/portal/lib/db.class.php on line 82

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/portal/lib/db.class.php on line 82

Fatal error: Uncaught TypeError: mysqli_errno(): Argument #1 ($mysql) must be of type mysqli, bool given in /www/portal/lib/db.class.php:26 Stack trace: #0 /www/portal/lib/db.class.php(26): mysqli_errno() #1 /www/portal/lib/db.class.php(84): db->debug() #2 /www/portal/lib/db.class.php(509): db->__construct() #3 /www/portal/index.php(8): require_once('...') #4 {main} thrown in /www/portal/lib/db.class.php on line 26