Step 4 - running on emulator shows multicoloured blocks

[redeveloper3]

Hello - in Step 4 ('Run the starter app'), using Pixel_3a_API_30_x86 as emulator the screen displays multicoloured
moving blocks (attaching screenshot).

I tried wiping data from the emulator but had the same result.

Android Studio version 4.1.1

Any advice much appreciated - thanks!