Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/html/articledb.php:26 Stack trace: #0 /var/www/html/articledb.php(26): mysqli_num_rows() #1 /var/www/html/index.php(123): GetArticle() #2 {main} thrown in /var/www/html/articledb.php on line 26