Fatal error: Uncaught mysqli_sql_exception: Duplicate entry 'https://t.me/houkai2' for key 'url' in /var/www/bootg/function.php:310
Stack trace:
#0 /var/www/bootg/function.php(310): mysqli_query()
#1 /var/www/bootg/add.php(93): insert()
#2 {main}
thrown in /var/www/bootg/function.php on line 310