[arch-general] NetworkManager from Commandline

Hi guys, I'm moving from KDE to Fluxbox, I want to keep using the NetworkManger. I have configured a lots of connection in it(WiFi / Cisco VPN for example). But I can't access my secrets to it. nmcli con up uuid 7f29abd0-c0d5-4e55-8796 Error: Connection activation failed: no valid VPN secrets. I guess, I saved them in the keyring file, how can I get access from the cli? Is there maybe another tool to mange the connection or getting access to the KDE Keyring file?