speech to text batch API + python exception

Hi,

Im trying to use Speech to text Batch API. Currently im getting the error below.

Also, the audio file content URI provided is publicly accessible.

HTTP response body: {
"code": "InvalidRequest",
"message": "A valid value is required for transcription.dataset. OR A valid value is required for transcription.contentUrls. OR Only absolute URIs containing a valid scheme, authority and path are allowed for transcription.contentContainerUrl.",
"innerError": {
"code": "InvalidPayload",
"message": "A valid value is required for transcription.dataset. OR A valid value is required for transcription.contentUrls. OR Only absolute URIs containing a valid scheme, authority and path are allowed for transcription.contentContainerUrl."
}
}