Error after sending in flutter web

Hey I love this plugin and I use it In iOS and macOS with no problems, but when I send using WEB I can send but receive this error.

`Performing hot restart...
Waiting for connection from debug service on Chrome...
Restarted application in 766ms.
Error: XMLHttpRequest error.
    dart-sdk/lib/_internal/js_dev_runtime/patch/core_patch.dart 906:28                get current
packages/http/src/browser_client.dart 71:22                                       <fn>
dart-sdk/lib/async/zone.dart 1612:54                                              runUnary
dart-sdk/lib/async/future_impl.dart 152:18                                        handleValue
dart-sdk/lib/async/future_impl.dart 704:44                                        handleValueCallback
dart-sdk/lib/async/future_impl.dart 733:13                                        _propagateToListeners
dart-sdk/lib/async/future_impl.dart 530:7                                         [_complete]
dart-sdk/lib/async/stream_pipe.dart 61:11                                         _cancelAndValue
dart-sdk/lib/async/stream.dart 1219:7                                             <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 324:14  _checkAndCall
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 329:39  dcall
dart-sdk/lib/html/dart2js/html_dart2js.dart 37307:58                              <fn>

    at Object.createErrorWithStack (http://localhost:57621/dart_sdk.js:5044:12)
    at Object._rethrow (http://localhost:57621/dart_sdk.js:37476:16)
    at async._AsyncCallbackEntry.new.callback (http://localhost:57621/dart_sdk.js:37472:13)
    at Object._microtaskLoop (http://localhost:57621/dart_sdk.js:37332:13)
    at _startMicrotaskLoop (http://localhost:57621/dart_sdk.js:37338:13)
    at http://localhost:57621/dart_sdk.js:33109:9
`

This is the code I use for sending :

`import 'import.dart';
import 'package:flutter/cupertino.dart';

class EmailSender {
  EmailSender({required this.address, required this.message});

  final String address;
  final String message;
  final mailer = Mailer(
      'SG.API');

  bool sendMail() {
    final toAddress = Address('$address');
    final fromAddress = Address('my address);
    final content = Content('text/plain', '$message');
    final subject = 'SUBJECT';
    final personalization = Personalization(
      [toAddress],
      //cc: [fromAddress],
    );
    bool resultValue = false;

    final email = Email(
      [personalization],
      fromAddress,
      subject,
      content: [content],
      //attachments: [attachments],
    );
    mailer.send(email).then((result) {
      print(result.hashCode);
      print('VALUE ${result.isValue}');
      //print(result.asValue.value);
      print('ERROR ${result.isError}');
      result.isError ? print(result.asError!.error) : print('');
      if (result.isValue) {
        resultValue = true;
      } else if (result.isError) {
        resultValue = false;
      }
    });
    return resultValue;
  }
}

class EmailSenderError extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return CupertinoAlertDialog(
      title: Text(
        'Errore invio email',
      ),
      content: Column(
        children: [
          Text(
            'L\'email non e\' stata inviata a causa di un errore. Verifica l\'inirizzo email o la tua connessione a internet.',
          ),
        ],
      ),
      actions: <Widget>[
        TextButton(
            onPressed: () {
              Navigator.of(context).pop();
            },
            child: Text(
              'Capito',
              style: TextStyle(color: CupertinoColors.destructiveRed),
            )),
      ],
    );
  }
}
`

How can I fix the code to make it work properly as in the other platform? Thank you so much!

dylanshine / sendgrid_mailer

Error after sending in flutter web #8