'React Native build variants

I recently got several errors when compiling my React Native app inn Android Studio that said I was missing various build variants. When I clicked the Build Variants window in Android Studio, there were no build variants listed there. I've read that you can manually create Build Variants by specifying a Build Type and Product Flavor, but I've never heard of either of these before, and am wondering if I'm missing something here. Should there be a bunch of Build Variants automatically in the Build Variants window in Android Studio?



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