A light issue. File says "forbidden". I can't find the file anywhere in memory of my android device. I am only left with a notification.
This used to happen to me too try deleting the forbidden file, and re-downloading with a stabler internet connection. The file most likely wasn't able to fully install itself due to a change in your connections strength. Hope this helps :]
Don't use Google's adware and spyware ridden garbage. Use a real browser. All of mine go to Android's native "downloads" folder just fine.