When connecting WPBot to Dialogflow, it’s stuck in the “connecting” status.

I attempted to integrate WPBot with Dialogflow and tested the plugin locally (http://localhost/wordpress). I followed the guide and completed the following steps:

1. Downloaded the Google client package.
2. Created a project in Google Cloud and generated a service key (with owner permissions).
3. Created a Dialogflow ES agent in the Global – US region.
4. Entered the corresponding project ID and key into the WPBot plugin settings.

However, after completing everything, when I clicked on “Test Dialogflow Connection,” it remained stuck in the “connecting” status without any logs or response.