How do I escape a bad VPN sign on request
You could try with the native option in your mac to use a different way to connect to your VPN, try this:

Go to System reference > Network > add a new connection (the plus sign on the down left corner) on interface select "VPN" on vpn type select "Cisco VPN" change the name (if you like), Add your company's values and try it to connect, I used this option and my VPN works like a charm.