AAC Znote Fatal error Uncaught mysqli_sql_exception

[Icaraii]

Hi guys, I'm trying to open a local server (Hellgrave Custom RPG Server 12.72 (https://otland.net/threads/hellgrave-custom-rpg-server-12-72.280918/)) but I'm messing something up when configing Znote, this erro keep appearing when I open the site:

Fatal error: Uncaught mysqli_sql_exception: Unknown column 'online' in 'where clause' in C:\xampp\htdocs\engine\database\connect.php:53 Stack trace: #0 C:\xampp\htdocs\engine\database\connect.php(53): mysqli_query(Object(mysqli), 'SELECT COUNT(`i...') #1 C:\xampp\htdocs\engine\function\users.php(1454): mysql_select_single('SELECT COUNT(`i...') #2 C:\xampp\htdocs\layout\overall\header.php(121): user_count_online() #3 C:\xampp\htdocs\home.php(2): include('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\engine\database\connect.php on line 53

I tried to put the files here, but I don't know if they will load.

Can somebody help me with that?