fixing flash message

src/App.js

@@ -16,10 +16,8 @@ export default function App() {
   const Stack = createStackNavigator();
   return (
     <NavigationContainer theme={navigationTheme}>
-    <FlashMessage position="top" />   
-      <Stack.Navigator>
-        <Stack.Screen name="Home" component={SharingDataOptionsNavigator}  options={{headerShown: false}}/>
-      </Stack.Navigator>
+        <SharingDataOptionsNavigator/>
+      <FlashMessage position="top"/>  
     </NavigationContainer>
   );
 }