Issue in make a phone call within Google Assistant App

Question

I try to implement button in basic card i got an error

API Version 2: Failed to parse JSON response string with \'INVALID_ARGUMENT\' error: \"(expected_i

Answer 1

The URL property that you are using includes a phonenumber. The link property can only use links to a webpage. This also comes back in the error message that you are getting:

"the protocol must be http or https.".

So if you want to fix the error, you need to include a http or https link in your button instead of a phonenumber.

As for calling a phonenumber from the Google Assistant App, I'm not sure if this feature is supported at the moment.