After launching the app, it shows "file:///android_asset/www/index.html" not found

[hman190]

Hi, I have build the app on my mobile and it shows an error message immediately.

The message has a title of Application Error, and the content is new::ERR_FILE_NOT_FOUND(file:///android_asset/www/index.html).

I checked the code and found that in the icerrr/androidapp/com.rejh.icerrr.itson-as/app/libs/cordova-2.7.0.jar!/org/apache/cordova/Config.class, there is a function called getStartUrl() and it will return "file:///android_asset/www/index.html".

Where could I find the file in order to run the app successfully? Thank you for your help!