PackagingResults:Error: Error Unknown Error

link text
So yea error unknown error. Im packaging the project for android and this is my first time dooing an app and i dont know what should i do can i have some help ?

Go to File → cook contents for windows, this cooks the project instead of a full package. from a quick glance of your logs I see a lot of these…

Cook: LogLinker:Warning: Can’t find file for asset ‘/Script/WebBrowserWidget’ while loading …/…/…/…/…/…/Hack/Final/Content/M_UI/G-maps/Stonehenge.uasset.
UATHelper: Packaging (Android (All)): Cook: LogUObjectGlobals:Warning: Failed to load ‘…/…/…/…/…/…/Hack/Final/Content/M_UI/G-maps/Stonehenge.uasset’: Can’t find file for asset ‘/Script/WebBrowserWidget’ while loading …/…/…/…/…/…/Hack/Final/Content/M_UI/G-maps/Stonehenge.uasset.

This means you need to fix folder redirects and make sure your assets are using files that are still present. This is a common issue with UE4 and the solution to it is to always keep a clean project going by cooking often and addressing any issues that come up, an ideal cook is 0 warning/errors each time.