Warning: mysqli_connect(): (HY000/2002): Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte in C:\inetpub\wwwroot\manage\incl\database.php on line 3

Fatal error: Uncaught TypeError: mysqli_select_db(): Argument #1 ($mysql) must be of type mysqli, bool given in C:\inetpub\wwwroot\manage\incl\database.php:7
Stack trace:
#0 C:\inetpub\wwwroot\manage\incl\database.php(7): mysqli_select_db(false, 'hammerschmid_at')
#1 C:\inetpub\wwwroot\frame\helper\config.php(13): require_once('C:\\inetpub\\wwwr...')
#2 C:\inetpub\wwwroot\frame\products.php(8): require_once('C:\\inetpub\\wwwr...')
#3 {main}
  thrown in C:\inetpub\wwwroot\manage\incl\database.php on line 7