If you load vpn from config on Endeavouros with GNOME and it doesn’t work and you have this error in log:
окт 20 17:06:09 NetworkManager[850]: <warn> [1697819.3193] vpn[0x55c99c300,6f00a2-735d-46-bc97-f05b27040fb5,""]: secrets: failed to request VPN secrets #3: No agents were available for this request.
try yay -S network-manager-applet
it helped me