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ولی ارور میده

کد:

class MyHomePage extends StatelessWidget {
  const MyHomePage({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Circulum Vitae'),
        actions: const [
          Icon(CupertinoIcons.chat_bubble_fill),
          Padding(
            padding: EdgeInsets.fromLTRB(8, 0, 16, 0),
            child: Icon(CupertinoIcons.ellipsis_vertical),
          ),
        ],
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(32.0),
            child: Row(
              children: [
                ClipRRect(
                    borderRadius: BorderRadius.circular(8.0),
                    child: Image.asset(
                      'assets/images/profile.jpeg',
                      width: 60,
                      height: 60,
                    )),
                Expanded(
                  child: Padding(
                    padding: const EdgeInsets.all(8.0),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        const Text(
                          'Brice seraphin',
                          style: Theme.of(context).textTheme.subtitle1,
                        ),
                        const Text('Product & Print Designer'),
                        Row(
                          children: [
                            Icon(CupertinoIcons.location),
                            Text('paris, France'),
                          ],
                        )
                      ],
                    ),
                  ),
                ),
                Icon(
                  CupertinoIcons.heart,
                  color: Theme.of(context).primaryColor,
                )
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.fromLTRB(32, 0, 32, 16),
            child: Text(
                'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse fermentum non tortor sodales rhoncus. Ut ipsum sapien, interdum laoreet ante vitae, vestibulum viverra est.'),
          ),
          Divider()
        ],
      ),
    );
  }
}

اروری که میده:

: Error: Not a constant expression.
lib/main.dart:83
                          style: Theme.of(context).textTheme.subtitle1,
                                                   ^^^^^^^^^

اطلاعات theme :

      theme: ThemeData(
        primarySwatch: Colors.blue,
        primaryColor: Colors.pink.shade400,
        brightness: Brightness.dark,
        scaffoldBackgroundColor: Color.fromARGB(255, 30, 30, 30),
        textTheme: GoogleFonts.latoTextTheme(TextTheme(
          bodyText2: TextStyle(fontSize: 15),
          bodyText1: TextStyle(fontSize: 13),
          headline6: TextStyle(fontWeight: FontWeight.bold),
          subtitle1: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
        )),
        appBarTheme: const AppBarTheme(
          backgroundColor: Colors.black,
        ),
      ),

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