Android Studio – 'package:flutter/src/widgets/framework.dart': Failed assertion: line 5356 pos 14: '()

I get the error

'package:flutter/src/widgets/framework.dart': Failed assertion: line 5356 pos 14: '() {
        // check that it really is our d

when I tab on a textview inside my app.

This is how i initialize the app itself.

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ScreenUtilInit(
      designSize: Size(460,790),
      builder: (context) => MultiProvider(
          providers: [
            ChangeNotifierProvider(create: (context) => TestApp()),
            ChangeNotifierProvider(create: (context) => PageControllerProvider()),
            ChangeNotifierProvider(create: (context) => RequestProvider()),
            ChangeNotifierProvider(create: (context) => HistoryProvider()),
            ChangeNotifierProvider(create: (context) => ThemeProvider()),
          ],
          child: App()
      ),
    );
  }
}