Google Assistant is experiencing temporary issues today, the 20th of August '19. You may find that you are unable to initiate music playback. Upon trying, you will receive the following voice notification: ”I can’t do that here, but you can ask me to play it on one of your other devices”. You can view the status of any ongoing outages via our Status page.
We are currently investigating the issue and we will have it fixed as soon as possible.
We will update this thread once the outage is resolved. Many thanks for your patience and understanding!