Introduction

I am working on Flutter and Dart.
In the app, I have a screen that displays the result of the invoice scan,
It doesn’t matter whats the content there,
because the question not related to it.
Within this screen I added a button named Finish,
which suppose to take the user to the HomeScreen.

Actually, this button takes the user to the HomeScreen as expected,
but then, trying to scan another invoice face an error.
e.g, For the first scan it succeeds, but comes back to home
by the Finish button probably causes a Bug,
so the next try to scan is failed.
Actually, I tried two approaches, where the first works well,
but the second faces a Bug.

The relevant code snippet

Attention:
Share Button (and its implementation code,
consist of _showExportOptions),
dose not relevant for the question.

Attention:
You have to uncomment the approach you want to test.

 @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.start, // Align all buttons to the start
      children: [
        // 'Share' Button
        InkWell(
          onTap: () => _showExportOptions(context, widget.vendor),
          child: _buildIconButton(Icons.share, 'Share', color: Colors.white),
        ),
        SizedBox(width: 16), // Space between buttons

        // 'Finish' Button
        InkWell(
          onTap: () async {
    /*
    // The first approch:  you see 3 `Navigator lines`
    // because for my app this takes you to `HomePage`.
    Navigator.of(context).pop();
    Navigator.of(context).pop();
    Navigator.of(context).pop();
    Provider.of<SupplierModel>(context, listen: false).reset();
    */

            /*
            // The second approach
            Navigator.of(context).pushNamed(HomeScreen.routename, arguments: 1);
            Provider.of<SupplierModel>(context, listen: false).reset();
            */
          },

          child: _buildIconButton(Icons.check, 'Finish', color: Colors.white),
        ),
      ],
    );
  }


  Widget _buildIconButton(IconData icon, String label, {Color? color}) {
    return Column(
      children: [
        Icon(icon, color: color),
        Text(label, style: TextStyle(color: color)),
      ],
    );
  }

The issue

Expected:
A button for going back to HomeScreen.
Actually:
The user came back to Home Screen, but after that, trying to scan a new invoice failed.

With this approcah, all works well:

Navigator.of(context).pop();
    Navigator.of(context).pop();
    Navigator.of(context).pop();
    Provider.of<SupplierModel>(context, listen: false).reset();

However, with this approach, an error occurs:

Provider.of<SupplierModel>(context, listen: false).reset();
Navigator.of(context).pushNamed(HomeScreen.routename, arguments: 1);
 

The error massage

@pragma("vm:external-name", "Error_throwWithStackTrace")
Concurrent modification during iteration: Instance(length:36) of '_GrowableList'.

Somtimes, insted of the error massage i see:
“Your invoice is not align”.

Attention:
I also tried to place the Provider after the Navigator,
but that does not solve it.

Moreever, I also tried to use Future delay of 100 miliseconds,
but its is also failed.