Fatal error: Uncaught mysqli_sql_exception: Duplicate entry '11' for key 'PRIMARY' in /users/2020/i2019031/public_html/WebDB/06/insert.php:16
Stack trace:
#0 /users/2020/i2019031/public_html/WebDB/06/insert.php(16): mysqli_query()
#1 {main}
thrown in /users/2020/i2019031/public_html/WebDB/06/insert.php on line 16