Failed to connect because there were no valid VPN secrets

[one.geeky at gmail.com (Ali)]

Hi there,

I'm trying to connect with openconnect (GUI) but it says "The VPN
connection 'Connection 1' failed because there were no valid VPN
secrets."

I have:
Server ip,
userbame,
password.

Do I need any other essential data? Is certificate file integral, and
did that cause this error?

Thanks