vpn – OpenVPN client – session-start: ** ERROR ** Failed to start new session: Failed calling D-Bus method Connect: Timeout was reached

First I run: $ openvpn3 config-import --config jethro-cao.ovpn, and get the expected output of: Configuration imported. Configuration path: /net/openvpn/v3/configuration/339401a6xf41ex483ex8ea4x60cfa3e2a844

Now I try to connect like shown below:

$ openvpn3 session-start --config-path /net/openvpn/v3/configuration/339401a6xf41ex483ex8ea4x60cfa3e2a844
Session path: /net/openvpn/v3/sessions/c398f1cesbd60s4ae5sabbbs123b9bb27186
Auth User name: jethro.cao
Auth Password: 
Enter Authenticator Code: 629542

Then after about a 10sec hang, the following error gets displayed:

session-start: ** ERROR ** Failed to start new session: Failed calling D-Bus method Connect: Timeout was reached

My username and password (and OTP too ofc) should all be correct, since I’m able to log into the OpenVPN CWS using the same credentials to manage my profile.

Also running $ openvpn3 sessions-list, after a very long wait of over a minute, I get the following output:

-----------------------------------------------------------------------------
        Path: /net/openvpn/v3/sessions/c398f1cesbd60s4ae5sabbbs123b9bb27186
     Created: Mon Jul 12 18:56:36 2021                  PID: 38321
       Owner: jyscao                                 Device: (None)
 Config name: jethro-cao.ovpn
      Status: (No status)
-----------------------------------------------------------------------------

Anyone have experience with this issue?

Edit: I should add, up until today these commands were working well for me, for about 2 weeks.