阿里云语音AI这个为啥返回了解析异常？

阿里云语音AI这个为啥返回了解析异常？
{
"context": {
"sdk": {
"language": "C++",
"name": "nls-cpp-sdk3.x-linux",
"version": "3.1.16"
}
},
"header": {
"appkey": "*",
"message_id": "1000dd3279bc483b9e54fdc2c64b46aa",
"name": "StartSynthesis",
"namespace": "SpeechSynthesizer",
"task_id": "5208d932b99f4a59a2d368263c902ecd"
},
"payload": {
"format": "pcm",
"sample_rate": 8000,
"speech_rate": -200,
"text": "请闭上眼睛休息一下好了，请睁开眼睛。",
"voice": "aixia",
"volume": 100
}
}
{
"header": {
"namespace": "Default",
"name": "TaskFailed",
"status": 41020001,
"message_id": "1e282a8c8893449ea48335d3fda2d961",
"task_id": "5208d932b99f4a59a2d368263c902ecd",
"status_text": "TTS:TtsClientError:Request json illegal, failed to parse request. "
}
}