DVSitch Dashboard not working after latest update

I updated my ASL3 and dvswitch dashboard stoped working

dvswitch-base 1.6.0-20250507-99
dvswitch-dashboard 1.6.1-20241231-98
rpi-eeprom 27.8-1
userconf-pi 0.11

One of this update is responsible for braking DVSwitch Dashboard

Did you update ASL3 only or did you update the entire system /ie all software ?

I updated all software, everything what was inside updates in my asl3 node

You might check with the folks over at DVSWITCH @ groups.io if that software updated as well.
I don't think there is anything in ASL that would effect the DVS dashboard and could even be a OS/http type update that caused your issue.
DVS runs independent of ASL until you make a connection between the two.

I just want to say, DVSwitch dashboard was accessible before update and not after.

The groups.io community is your best shot for DVSwitch support. That is not an ASL component. An ASL update would not have broken DVSwitch unless you'd made some unsupported configuration change to the ASL configuration.

problem is in dvswitch-base 1.6.0-20250507-99
run those commands, they would fix problem:
sudo cp -r /usr/share/dvswitch/* /var/www/html/
sudo systemctl restart apache2