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下载图片出现了错

VM308:1 thirdScriptError Cannot read property 'fileid' of undefined; [Component] Event Handler Error @ pages/cloud/cloud#bound downloadFile TypeError: Cannot read property 'fileid' of undefined at c.downloadFile (http://127.0.0.1:53690/appservice/pages/cloud/cloud.js:152:36) at Object.o.safeCallback (http://127.0.0.1:53690/appservice/__dev__/WAService.js:15:2390) at http://127.0.0.1:53690/appservice/__dev__/WAService.js:17:17303 at p (http://127.0.0.1:53690/appservice/__dev__/WAService.js:17:19574) at http://127.0.0.1:53690/appservice/__dev__/WAService.js:17:18875 at n (http://127.0.0.1:53690/appservice/__dev__/WAService.js:6:8644) at n (http://127.0.0.1:53690/appservice/appservice?t=1571473964403:1419:27790) at e.exports.

(http://127.0.0.1:53690/appservice/appservice?t=1571473964403:1419:28132) at http://127.0.0.1:53690/appservice/appservice?t=1571473964403:1419:13287 at Array.forEach ()内容...