Fatal error: Uncaught mysqli_sql_exception: Unknown database 'testwifi' in /var/www/html/projects/testwifi/opendbconn.php:4 Stack trace: #0 /var/www/html/projects/testwifi/opendbconn.php(4): mysqli_connect() #1 /var/www/html/projects/testwifi/testwifi.php(4): include('...') #2 {main} thrown in /var/www/html/projects/testwifi/opendbconn.php on line 4