Warning: include(conndb.php): Failed to open stream: No such file or directory in /var/www/html/rasc/header.php on line 10

Warning: include(): Failed opening 'conndb.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/rasc/header.php on line 10

Warning: Undefined variable $con in /var/www/html/rasc/header.php on line 12

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /var/www/html/rasc/header.php:12 Stack trace: #0 /var/www/html/rasc/header.php(12): mysqli_query() #1 /var/www/html/rasc/about.php(45): include('...') #2 {main} thrown in /var/www/html/rasc/header.php on line 12