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I am using this code to call the API but it fails every time. I have tried many avatar_ids and voice_ids, either from the web interface or from listing the available ids and using those. I had some initial success but later it just failed. I cannot see the API calls in the API usage either:

generate_url = "https://api.heygen.com/v2/video/generate"

    def generate_and_download_videos(podcast_script_data):
        video_segments = []

        for index, (speaker, text) in enumerate(podcast_script_data):
            avatar_id, voice_id = get_avatar_params(speaker)
            print(avatar_id, voice_id)
            payload = {
                "video_inputs": [
                    {
                        "character": {
                            "type": "avatar",
                            "avatar_id": "nik_expressive_20240910",
                            "avatar_style": "normal"
                        },
                        "voice": {
                            "type": "text",
                            "voice_id": "0009aabefe3a4553bc581d837b6268cb",
                            "input_text": "This is a test please respect that",
                            "speed": 1.0 
                        }
                    }
                ],
                "test": False, 
                "aspect_ratio": "16:9" 
            }


            response = requests.post(generate_url, json=payload, headers=HEADERS)

            print(f"Response Status Code: {response.status_code}")
            print(f"Response Text: {response.text}")
            response_data = response.json()
            print('response', response_data)
            if response.status_code != 200 or "data" not in response_data:
                print(f"Error generating video for segment {index + 1}: {response_data}")
                continue

            video_id = response_data["data"]["video_id"]
            print(f"Video generation started for segment {index + 1}. Video ID: {video_id}")

            retrieve_url = f"https://api.heygen.com/v1/video_status.get?video_id={video_id}"
            status = "waiting"
            elapsed_time = 0
            max_wait_time = 600
            wait_interval = 5

            while status in ["waiting", "pending", "processing"]:
                response = requests.get(retrieve_url, headers=HEADERS)
                print('response to data request: ', response)
                video_status_data = response.json()
                
                if response.status_code != 200 or "data" not in video_status_data:
                    print(f"Error checking status for segment {index + 1}: {response.text}")
                    break

                status = video_status_data["data"].get("status", "unknown")
                print(f"Segment {index + 1} status: {status}")

                if status == "completed":
                    video_url = video_status_data["data"].get("video_url")
                    if video_url:
                        print(f"Segment {index + 1} completed. Download URL: {video_url}")

                        video_response = requests.get(video_url)
                        if video_response.status_code == 200:
                            segment_filename = f"segment_{index + 1}.mp4"
                            with open(segment_filename, "wb") as video_file:
                                video_file.write(video_response.content)
                            print(f"Segment {index + 1} downloaded as {segment_filename}.")
                            video_segments.append(segment_filename)
                        else:
                            print(f"Error downloading segment {index + 1}: {video_response.status_code}")
                    break
                elif status == "failed":
                    print(f"Video generation failed for segment {index + 1}.")
                    break

                time.sleep(wait_interval)
                elapsed_time += wait_interval
                if elapsed_time >= max_wait_time:
                    print(f"Video generation timed out for segment {index + 1}.")
                    break
        print('video_segments', video_segments)
        return video_segments