• 在苹果电脑上，使用模拟器运行微信小程序
• 在相机预览界面，实时监听相机的数据帧，报错信息如下

```

Error: SystemError (appServiceSDKScriptError)

{"errMsg":"start:fail camera is not found"}

    at Function.errorReport (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at Object.<anonymous> (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at Object.cb (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at J._privEmit (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at J.emit (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at WAServiceMainContext.js?t=wechat&v=3.14.1:1

    at a (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at ze (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at Object.He (WAServiceMainContext.js?t=wechat&v=3.14.1:1)

    at ae (WAServiceMainContext.js?t=wechat&v=3.14.1:1)(env: macOS,mp,2.01.2510270; lib: 3.14.1)

• 在真机环境下，可以正常调用，实时获取相机的数据帧