Fatal error: Uncaught TypeError: mysqli_free_result(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/html/allcon.pro/system/classes/mysql.class.php:204
Stack trace:
#0 /var/www/html/allcon.pro/system/classes/mysql.class.php(204): mysqli_free_result()
#1 /var/www/html/allcon.pro/system/init.php(141): db->free()
#2 /var/www/html/allcon.pro/index.php(46): require_once('...')
#3 {main}
  thrown in /var/www/html/allcon.pro/system/classes/mysql.class.php on line 204