@expo/vector-icon / import { FontAwesome, Ionicons} is not showing when building Android APK ?

import { FontAwesome,Ionicons } from ‘@expo/vector-icons’;
const SigninScreen = () => {

<View style={styles.rowContainer}>
<Ionicons
name='logo-facebook'
size={28}
color='#3C5A99'
style={styles.icon}
/>
<FontAwesome
name='google-plus-square'
size={28}
color='#DD4B39'
style={styles.icon}
/>
</View>

}
const styles = StyleSheet.create({
icon: {
paddingHorizontal: 5,
paddingTop: 15
}
})
export default SigninScreen;

i have created new project with expo-cli and i used @expo/vector-icons as mentioned in documentation of the expo.
import { FontAwesome,Ionicons } from ‘@expo/vector-icons’;

but when i build expo build:android by this command i got the apk then i installed on my mobile and when i opend app i start showing |X| rather than showing facebook and google icons …
i dont know wht … can you please help to fix this ???