Please install the VPN 3 components in the following order:

1. anyconnect-macos-4.10.04071-core-vpn-webdeploy-k9
2. anyconnect-macos-4.10.04071-iseposture-webdeploy-k9
3. anyconnect-macos-4.10.04071-dart-webdeploy-k9

After installing run the bitdefender update before connecting to the VPN.