Yesterday I have try to connect to my vpn server with vpnc client but I have get an error.
I have open the Gnome NM configuration panel and I see that group password is missing.
Then I have type it again and save the panel, but the connection do not work anymore and if I open the panel after I try to connect the group password is already empty.

See attached vpnc.txt log file of two connections.
First is work connection, and is like all previous (working) connection
Second is an broken connection, and it differ from other (working) connection.

I have query the the system admin for some change, but nothing has been changed into my account or server parameter ...

Someone can help me to debug why now the connection do not work anymore?

Many thanks
-- 
Dario Lesca
(inviato dal mio Linux Fedora 30 Workstation)