Problem with building the app (Android App .apk)

I want my app on my phone
When I press Build, than Android App.apk, I get this error message
App Inventor is unable to compile this project.The compiler error output
was[ReadBuildInfo] Starting Task[ReadBuildInfo] Task errored
Maybe it is because I have used an extension??
Tetris.aia (664.4 KB)

show us the full error message, or post your aia here.

I did it ^^^

Try this one Tetris.aia (124.8 KB)

Project within project

1 Like

what did you change?

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