[!] Error connecting to VPN.
[!] There are issues in managing IPv6 in the system. Please test the system for the root cause.
Not being able to manage IPv6 by protonvpn-cli might cause issues in leaking the system’s IPv6 address.

sudo rm /etc/resolv
sudo ln -s /etc/resolvconf/run/resolve.conf /etc/resolv.conf

sudo rm -rf /etc/resolv.conf

sudo rm -rf /etc/resolv.conf

sudo rm -rf /etc/resolv.conf

sudo rm -rf /etc/resolv.conf

sudo touch /etc/resolv.conf

sudo nano /etc/resolv.conf

sudo service network-manager restart