Not able to connect to Nucleus when running Create App in headless mode

I am trying to run the Create App in headless mode by launching the Create App from the shell with omni.services.streamclient.webrtc extension enabled and in no-window mode. And I am able to access it from the browser perfectly and also am able to navigate through the App without any latency as I was facing while using the omni.services.streamclient.websocket extension. But the only issue I am facing now is adding a new connection or reconnecting to either of the localhost or remote Nucleus server.
Following are the warning messages that I got in the console:

2022-05-06 10:51:44 [412,858ms] [Warning] [omni.kit.widget.filebrowser.model] Error populating 'omniverse://omniverse.quantiphi.com': Error listing directory 'omniverse://omniverse.quantiphi.com': Result.ERROR
2022-05-06 10:51:44 [412,921ms] [Warning] [omni.client.plugin]  Tick: authentication: Discovery(ws://omniverse.quantiphi.com/omni/discovery): Timed out waiting for results for Nucleus Auth/Credentials
2022-05-06 10:51:54 [422,921ms] [Warning] [omni.client.plugin]  Tick: authentication: Discovery(wss://omniverse.quantiphi.com/omni/discovery): Timed out waiting for results for Nucleus Auth/Credentials
2022-05-06 10:52:04 [432,921ms] [Warning] [omni.client.plugin]  Tick: authentication: Discovery(ws://omniverse.quantiphi.com:3333): Timed out waiting for results for Nucleus Auth/Credentials
2022-05-06 10:52:44 [472,765ms] [Warning] [omni.kit.widget.filebrowser.model] Error populating 'omniverse://localhost': Error listing directory 'omniverse://localhost': Result.ERROR_CONNECTION

Any solution/workaround/development would really be helpful to me.
Thank You in Advance!!