SF Symbols in Big Sur

I am using SF Symbols extensively in a MacOS SwiftUI app. I recently upgraded the os on both my Mac and laptop to Big Sur. My Mac already had the SF Symbols app and I installed the new os without a clean install whereas my laptop was completely wiped clean before installing Big Sur.

Now when I run my app it displays the symbols correctly on the Mac but they don't show up on the laptop.

I thought the SF symbols were part of the Big Sur Os but it looks like at least in my case they need to be downloaded separately. How does that work with an app that uses them?

Thanks!