在Flutter中重建MaterialApp小部件时出现灰屏

如何解决在Flutter中重建MaterialApp小部件时出现灰屏

我正在使用Mobx进行状态控制。当我更改为themeMode屏幕呈灰色并返回到第一个屏幕时。但是调试模式可以正常工作并且没有错误。配置文件模式，引发以下错误消息。释放模式下也存在相同错误

 Another exception was thrown: Instance of 'ErrorSummary'

这里是'main.dart'

Observer(
        builder:(_){
          return MaterialApp(
              localizationsDelegates: context.localizationDelegates,supportedLocales: context.supportedLocales,locale: context.locale,navigatorKey: navigator,title: 'Hello',theme: AppTheme.lightTheme,darkTheme: ThemeData.dark().copyWith(
              tabBarTheme: TabBarTheme(indicator: Shapedecoration(shape: Border(bottom: BorderSide(color: blue)))),accentColor: Colors.blue,primaryColor:Colors.blue,canvasColor: darkBackground,scaffoldBackgroundColor: darkBackground,bottomNavigationBarTheme:
         BottomNavigationBarThemeData(backgroundColor: darkBackground),textTheme: TextTheme(bodyText2: TextStyle(color: gray))),themeMode:navigationStore.darkModeEnabled?ThemeMode.dark:ThemeMode.light,home: navigationStore.isFirst ? Introduction():MainPage()
      );}
    ),