Ubuntu - ufw status shows inactive after reboot

Question

Had enabled auto-restart for ufw, was working fine before, but I am not able to understand what went wrong...

use case:

when I check sudo ufw status it shows -> Status: inactive

Then I enable it sudo ufw enable it shows -> Command may disrupt existing ssh connections. Proceed with operation (y|n)? I hit -> y it shows -> Firewall is active and enabled on system startup

Then I reboot it sudo reboot and after reboot when i check the ufw status again, it shows inactive.

Tried the following things:

1. In file lib/systemd/system/uwf.service added line After=netfilter-persistent.service

2. In file etc/rc.local added following lines: ufw enable exit 0

3. In file etc/ufw/ufw.conf was already enabled ENABLED=yes

Did anyone face similar issue before?