I am using the following command to generate APK from the AAB file using the bundle tool.
I am using bundletool-all-1.8.2.jar downloaded from here
I am using Windows 10 and when I execute the following command, it didn't generate any APKS file but opened the bundletool-all-1.8.2.jar in WinRAR jar extractor
C:/<Download location>/bundletool-all-1.8.2.jar build-apks --bundle=D:/app-debug.aab --output=D:/app-dev-debug.apks --mode=universal