anonymous user There is a documented procedure to connect a Azure ML workspace on powerBI desktop and select the model and service before publishing this.
In this case it looks like you used python visual to consume your REST API but after publishing it the same script might be failing to even connect to the API. Not sure if any port needs to be opened up when published to web.
I think you can try the above procedure again with powerBI desktop using query editor and then try to publish the report to web.