Fatal error: Uncaught mysqli_sql_exception: Duplicate entry 'https://t.me/joinchat/Uf8RmCJ8Bo1BE9Ry' for key 'url' in /var/www/tgoop/function.php:295
Stack trace:
#0 /var/www/tgoop/function.php(295): mysqli_query()
#1 /var/www/tgoop/add.php(93): insert()
#2 {main}
thrown in /var/www/tgoop/function.php on line 295