Missing fonts/assets warning for release App Bundle builds

I'm getting this warning when i'm building release builds with flutter build appbundle:

Expected to find fonts for (MaterialIcons, TinyCampusIcons), but found (MaterialIcons). This usually means you are refering to font families in an IconData class but not including them in the assets section of your pubspec.yaml, are missing the package that would include them, or are missing "uses-material-design: true".

The build works find and I haven't noticed anything missing from the Play Store version but I'd still to know how to fix this.