Bullet Forum1.3 not work on dle 10.4 help

[Opium]

Hi have installed Bullet Energy 1.3 on dle 10.4, follow all installation step, and fix

Datalife Engine 10.4 ONLY, please do the following step in order to make the Bullet Energy Forum compatible...
Open /engine/modules/main.php and find:

if( $_SERVER['QUERY_STRING'] AND !$tpl->result['content'] AND !$tpl->result['info'] AND !$custom_news) {

Replace with

if( $_SERVER['QUERY_STRING'] AND !$tpl->result['content'] AND !$tpl->result['info'] AND !$custom_news AND !class_exists('Bullet_Energy_Main')) {

I access to forum CP, work fine, and i create a new Category and subforum, but if click "view live forum" get this error:
An error has occurred
To view forum you need to create at least one Category and Subforums.

I have created Category and subforum, why show me this error??

How to solve/fix this error?