Warning: mysqli_connect(): (HY000/2002): Only one usage of each socket address (protocol/network address/port) is normally permitted in E:\inetpub\sites\NMBT\PHPSite\DB_mysql.php on line 48

Fatal error: Uncaught TypeError: mysqli_select_db(): Argument #1 ($mysql) must be of type mysqli, bool given in E:\inetpub\sites\NMBT\PHPSite\DB_mysql.php:55 Stack trace: #0 E:\inetpub\sites\NMBT\PHPSite\DB_mysql.php(55): mysqli_select_db(false, 'nmbtgf_db1') #1 E:\inetpub\sites\NMBT\PHPSite\functions.php(116): DB->connect() #2 E:\inetpub\sites\NMBT\PHPSite\system.php(78): GetOffice(1) #3 E:\inetpub\sites\NMBT\PHPSite\header.php(2): require_once('E:\\inetpub\\site...') #4 E:\inetpub\sites\NMBT\PHPSite\content.php(21): include('E:\\inetpub\\site...') #5 {main} thrown in E:\inetpub\sites\NMBT\PHPSite\DB_mysql.php on line 55