在电脑端时，可以识别图片中文字，真机调试，提示请求超时。就算图片大小小于100kb，也提示出错。

Error: cloud.callFunction:fail -404012 polling exceed max timeout retry. (callId: 1638164164001-0.6158667476455653) (trace: 13:36:4 start->13:36:4 app show->13:36:19 timeout, retry->13:36:34 timeout, retry->13:36:49 timeout, abort)

    at nr (lib/WASubContext.js:2)

    at Function.<anonymous> (lib/WASubContext.js:2)

    at Generator.next (<anonymous>)

    at n (lib/WASubContext.js:2)

    at s (lib/WASubContext.js:2)