Fatal error: Uncaught ValueError: mysqli_query(): Argument #2 ($query) cannot be empty in /home/lucky72i_farhana/public_html/training.php:30 Stack trace: #0 /home/lucky72i_farhana/public_html/training.php(30): mysqli_query() #1 {main} thrown in /home/lucky72i_farhana/public_html/training.php on line 30