The API "chat.googleapis.com" doesn't exist or you don't have permission.

[ijo-amali]

When enabling the Hangouts Chat API, everything is fine until I go into the Configuration tab. There an error message shows:

The API "chat.googleapis.com" doesn't exist or you don't have permission to access it
Tracking Number: 2258005293166415353

What's happening, and how can I fix this?

[erickoledadevrel]

Unfortunately you can only use the Hangouts Chat API at the moment with a G Suite account, not an @gmail.com account. When you attempt to use an @gmail.com account you'll see the error you mentioned.

I've updated the codelab instructions to call this out clearly. Thanks for reporting this.