Google Actions sdk not playing audio in ssml from firebase storage

Google Actions SDK is unable to play audio files in SSML Audio tag from firebase storage. Although I could play same .ogg format file from wikipedia. https://upload.wikimedia.org/wikipedia/en/9/9f/Sample_of_%22Another_Day_in_Paradise%22.ogg

firebase file: https://firebasestorage.googleapis.com/v0/b/assisto-skill.appspot.com/o/TIP103_converted.mp3?alt=media&token=d0d08f9d-e340-478c-af00-657109683136

I'm using it by sending an SSML string that looks like:

<speak>
  <audio src='https://firebasestorage.googleapis.com/v0/b/assisto-skill.appspot.com/o/TIP103_converted.mp3?alt=media&token=d0d08f9d-e340-478c-af00-657109683136'>
  </audio>
</speak>

But I'm getting the following error:

expected_inputs[0].input_prompt.rich_initial_prompt.items[0].simple_response: 'ssml' could not be parsed.

What could be the reason...Is this a limitation in actions sdk that url needs to be parameter free?