Fatal error: Uncaught mysqli_sql_exception: Duplicate entry '1' for key 'prof.PRIMARY' in /var/www/html/scripts/new_prof/add_100k.php:21 Stack trace: #0 /var/www/html/scripts/new_prof/add_100k.php(21): mysqli->query() #1 {main} thrown in /var/www/html/scripts/new_prof/add_100k.php on line 21