The program requires the installation of an emulator. To do this, select:

Try invalidate caches of Android Studio

Settings => Language & Frameworks => Android SDK.

In SDK Tools, you can install the missing tools.

If it happens that despite the emulator being installed, an error message is displayed, uninstall and reinstall the emulator.

If this does not help, uninstall and reinstall Android Studio.

Finally, click Finish.

The virtual device we created should appear in the Device Manager window.