Warning: session_start(): Session cannot be started after headers have already been sent in /var/www/html/index.php on line 3

Fatal error: Uncaught mysqli_sql_exception: No such file or directory in /var/www/html/db/connect.php:10 Stack trace: #0 /var/www/html/db/connect.php(10): mysqli_connect('localhost', 'root', Object(SensitiveParameterValue), 'eventmgmt', 3306) #1 /var/www/html/index.php(5): include('/var/www/html/d...') #2 {main} thrown in /var/www/html/db/connect.php on line 10