Error connecting to database - check your database connection properties in the constants.php file!

SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known
PHP Version : 8.0.30

Warning: session_start(): Session cannot be started after headers have already been sent in /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php on line 50

Fatal error: Uncaught Error: PDO object is not initialized, constructor was not called in /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php:471 Stack trace: #0 /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php(471): PDO->prepare() #1 /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php(59): Session->addActiveGuest() #2 /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php(26): Session->startSession() #3 /homepages/45/d805275579/htdocs/healthic/admin/includes/controller.php(28): Session->__construct() #4 /homepages/45/d805275579/htdocs/healthic/admin/login.php(2): include('/homepages/45/d...') #5 {main} thrown in /homepages/45/d805275579/htdocs/healthic/admin/includes/Session.php on line 471