Google Assistant: error damaged content, violation of network protocols

I’m trying to configure Google Assistant… on my smartphone,when I try to add a new device, on the list, I see my new devices just created [test] HAss.io, when I click it to add, a new page appear with the following error:

Error damaged content

During connection with 
https://www.naamah.online/api/google_assistant/auth?api_password=********&response_type=token&client_id=*********&redirect_uri=https://oauth-redirect.googleusercontent.com/r/hassio-9d299&scope=email+name&state=CswCQU1uRHRT.... 
there has been a violation of network protocols that can not be resolved.

The requested page can not be considered a cause of error during data transmission.

Where I’m wrong?

Ok… it’s a browser related problem with Firefox, Chrome instead resolve in right way the request.