HarmonyOS 鸿蒙Next根据官网提供的代码进行录像时报错

使用官网的 https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/camera-recording-case-V5 这个代码例子真机调试时报错 

prepare call failed. error code: {“code”:5400102,“name”:“BusinessError”}

getInputSurface call failed. error code: {“code”:5400102,“name”:“BusinessError”}

看官网说 操作不允许，到底是为什么不允许也不知道
这个是权限列表 

“requestPermissions”: [
  {
    “name”: “ohos.permission.INTERNET”
  },
  {
    “name”: “ohos.permission.RECORD_AUDIO”
  },
  {
    “name”: “ohos.permission.GET_NETWORK_INFO”
  },
  {
    “name”: “ohos.permission.WRITE_MEDIA”,
    “reason”: “$string:app_name”,
    “usedScene”: {
      “abilities”: [
        “FormAbility”
      ],
      “when”: “always”
    }
  },
  {
    “name”: “ohos.permission.MEDIA_LOCATION”,
    “reason”: “$string:app_name”,
    “usedScene”: {
      “abilities”: [
        “FormAbility”
      ],
      “when”: “always”
    }
  },
  {
    “name”: “ohos.permission.MICROPHONE”,
    “reason”: “$string:app_name”,
    “usedScene”: {
      “abilities”: [
        “FormAbility”
      ],
      “when”: “always”
    }
  },
  {
    “name”: “ohos.permission.CAMERA”,
    “reason”: “$string:app_name”,
    “usedScene”: {
      “abilities”: [
        “FormAbility”
      ],
      “when”: “always”
    }
  },
  {
    “name”: “ohos.permission.READ_MEDIA”,
    “reason”: “$string:app_name”,
    “usedScene”: {
      “abilities”: [
        “FormAbility”
      ],
      “when”: “always”
    }
  }
]

希望能帮忙解答下