Regarding Apk installation need help

MIT App Inventor Help
1

Apk not installing getting message "App not installed as package appears to be invalid". I downloaded the apk by scanning the qr code, please help.

2

What is your project name?
Taifun

3

My project name is VimalSheet

4

See if one of the following threads cam help

https://community.appinventor.mit.edu/search?context=topic&context_id=162214&q=package%20appears%20to%20be%20invalid&skip_context=true

Taifun