Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in /home/mahrisshir/public_html/system/db.php:111
Stack trace:
#0 /home/mahrisshir/public_html/online.php(29): Db->query('SELECT count(*)...')
#1 /home/mahrisshir/public_html/main.php(17): include('/home/mahrisshi...')
#2 /home/mahrisshir/public_html/comparison.php(2): require_once('/home/mahrisshi...')
#3 {main}
thrown in /home/mahrisshir/public_html/system/db.php on line 111