wx.downloadFile 昨天大批量报了 fail file data is empty 之后 ，我看群社群中有人也报了同样的错，说是已经解决了，用户重启一下微信就可以解决了，我们今天用户还是有大批报了这样的错，我们这边让用户重启微信来解决这个问题，一部分人解决了，但是大部分的用户还是没有解决，从日志上来看，我们今天还是有 24w 的日志报了 fail file data is empty . 而11月1日 只有20条错误日志为 fail file data is empty 。报错群体都是在 ios 端

用户 ip: 120.239.8.78

__用户设备信息 ： __

"systemInfo":{"benchmarkLevel":15,"language":"zh_CN","wifiEnabled":true,"safeArea":{"bottom":736,"height":716,"top":20,"width":414,"left":0,"right":414},"bluetoothEnabled":true,"locationAuthorized":true,"deviceOrientation":"portrait","notificationSoundAuthorized":true,"screenHeight":736,"windowHeight":736,"version":"7.0.17","fontSizeSetting":17,"system":"iOS 12.3.1","locationReducedAccuracy":false,"notificationAuthorized":true,"pixelRatio":3,"statusBarHeight":20,"notificationBadgeAuthorized":true,"windowWidth":414,"errMsg":"getSystemInfo:ok","locationEnabled":true,"model":"iPhone 7 Plus<iPhone9,2>","batteryLevel":27.000001907348633,"screenWidth":414,"screenTop":0,"microphoneAuthorized":true,"cameraAuthorized":true,"albumAuthorized":true,"notificationAlertAuthorized":true,"brand":"iPhone","platform":"ios","SDKVersion":"2.14.0","devicePixelRatio":3,"host":{"env":"WeChat","appId":"","version":385880362}},"networkType":"wifi","notifierVersion":"1.0.0","key":"xmkp-ort-wx"}

日志示例:

self error {"msg":"加载失败 tc失败 https://aod.cos.tx.xmcdn.com/group58/M0B/3B/30/wKgLc1yu6inj6u8mAAkVtoGXLS0354.jpg} 3 709 downloadFile:fail file data is empty","time":"Fri Nov 06 2020 09:28:09 GMT+0800 (CST)","auth":"263472894&5B6978C0340NA841DE213DAF0B8AA518887DC620602A1BC21D9215E2721C2C2AD1974CAC215A130MFC1841493969494_","openid":"oXKKp5YgD5ExCzUCXjydpl9BchDE","brand":"iPhone","model":"iPhone 7 Plus","system":"iOS 12.3.1"}
https://usr/app-service.js:5281:20101
https://lib/WASubContext.js:2:112385
https://lib/WASubContext.js:2:94436
https://lib/WASubContext.js:2:100977