Append into your config file path to your pass file which should contain your password indeed
askpass /etc/openvpn/yourpasswordhere.pass
Then run your openvpn again
sudo openvpn --config yourconfigfile.ovpn
Notes
Append into your config file path to your pass file which should contain your password indeed
askpass /etc/openvpn/yourpasswordhere.pass
Then run your openvpn again
sudo openvpn --config yourconfigfile.ovpn