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Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/html/aux-socar.canaanct.my/db/select.php:7 Stack trace: #0 /var/www/html/aux-socar.canaanct.my/db/select.php(7): mysqli_num_rows() #1 /var/www/html/aux-socar.canaanct.my/dashboard/index.php(34): SelectDB() #2 {main} thrown in /var/www/html/aux-socar.canaanct.my/db/select.php on line 7