Fatal error: Uncaught Error: mysqli_result object is already closed in /var/www/html/engine/classes/mysql.php:174
Stack trace:
#0 /var/www/html/engine/classes/mysql.php(174): mysqli_free_result(Object(mysqli_result))
#1 /var/www/html/engine/modules/landing.php(95): db->free(Object(mysqli_result))
#2 /var/www/html/engine/engine.php(840): include_once('/var/www/html/e...')
#3 /var/www/html/engine/init.php(869): require_once('/var/www/html/e...')
#4 /var/www/html/index.php(69): require_once('/var/www/html/e...')
#5 {main}
  thrown in /var/www/html/engine/classes/mysql.php on line 174