获取异步任务结果

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    "reason": "",
    "task_type": "TXT_TO_IMG",
    "eta": 0,
    "progress_percent": 0
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  "videos": [
    {
      "video_url": "",
      "video_url_ttl": "",
      "video_type": "",
      "nsfw_detection_result": {
        "valid": false,
        "confidence": null
      }
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}