Kanboard is running on wrong url

I install kanboard on my ubuntu server 22.04

kanboard is installed in /var/www/html/kanboard

and in configuration for apache2 virtual host is

<VirtualHost *:80>
ServerName kanboard.mydomain.local
DocumentRoot /var/www/html/kanboard

<Directory /var/www/html/kanboard/>
Options FollowSymLinks
AllowOverride All
Require all granted

the problem is that when i try url http://kanboard.mydomain.local nothing is running but when i try http://kanboard.mydomain.local/kanboard now is kanboard running, what is wrong i my configuration when I need run kanboard on that url

did you reload/restart apache?