Unrecognized font-family 'open-sans-bold '

I am trying to add custom fonts to my bare react native project and I keep getting Unrecognized font-family 'open-sans-bold ' on the ios similator. I added the fonts fold in my assets folder with files open-sans.ttf and open-sans-bold.ttf I also have react-native.config.js with the content below

module.exports = {
  project: {
    ios: {},
    android: {},
  },
  assets: ['./assets/fonts/'],
};

I run npx react-native link and I checked the info.plist file and I have the fonts in <key>UIAppFonts</key> I tried different solutions but none of them worked for me.