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I am making some testing scenarios for my flutter application. One of the functionalities is "About us" section. When tapping on "About Us" user is redirected to the web page and application is minimalized. This is an issue because test scenario fails on this spot. Flutter is not able to find any components and it fails on this particular error

Unhandled exception:
DriverError: Failed to fulfill Tap due to remote error
Original error: Bad state: The client closed with pending request "ext.flutter.driver".
Original stack trace:
#0      new Client.withoutJson.<anonymous closure> (package:json_rpc_2/src/client.dart:70:24)
#1      _RootZone.run (dart:async/zone.dart:1445:54)
#2      _FutureListener.handleWhenComplete (dart:async/future_impl.dart:167:18)
#3      Future._propagateToListeners.handleWhenCompleteCallback (dart:async/future_impl.dart:666:39)
#4      Future._propagateToListeners (dart:async/future_impl.dart:722:37)
#5      Future._propagateToListeners (dart:async/future_impl.dart:621:9)
#6      Future._completeWithValue (dart:async/future_impl.dart:529:5)
#7      Future._asyncCompleteWithValue.<anonymous closure> (dart:async/future_impl.dart:567:7)
#8      _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#9      _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#10     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#11     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:404:11)
#12     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:428:5)
#13     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)


#0      VMServiceFlutterDriver.sendCommand (package:flutter_driver/src/driver/vmservice_driver.dart:345:7)
<asynchronous suspension>
#1      FlutterDriver.tap (package:flutter_driver/src/driver/driver.dart:207:11)
#2      LoginPage.tapOnAboutUs (file:///D:/Projects/app/test_driver/page_objects/login_page.dart:52:19)
#3      aboutUs_steps.iClickOnAboutUsOnLoginPage (file:///D:/Projects/app/test_driver/steps/aboutUs_steps.dart:16:15)
<asynchronous suspension>
#4      _InstanceMirror._invoke (dart:mirrors-patch/mirrors_impl.dart:337:37)
#5      _InstanceMirror.invoke (dart:mirrors-patch/mirrors_impl.dart:333:25)
#6      OguretsState.invokeStep.<anonymous closure> (package:ogurets/src/ogurets_internal.dart:316:29)
#7      new Future.sync (dart:async/future.dart:223:31)
#8      OguretsState.invokeStep (package:ogurets/src/ogurets_internal.dart:315:25)
#9      OguretsState.executeStep (package:ogurets/src/ogurets_internal.dart:296:13)
<asynchronous suspension>
#10     OguretsState._findClassStyleStepRunners.<anonymous closure> (package:ogurets/src/ogurets_internal.dart:270:19)
#11     _Scenario._executeSubScenario (package:ogurets/src/model/scenario.dart:163:43)
<asynchronous suspension>
#12     _Scenario.execute (package:ogurets/src/model/scenario.dart:57:17)
#13     _Feature.execute (package:ogurets/src/model/feature.dart:41:64)
#14     OguretsOpts.processFeatureFile (package:ogurets/src/ogurets_opts.dart:327:49)
<asynchronous suspension>
#15     OguretsOpts.run (package:ogurets/src/ogurets_opts.dart:303:17)
<asynchronous suspension>
#16     main (file:///D:/Projects/app/test_driver/ogurets_flutter_test.dart:30:13)
#17     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32)
#18     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

Is there any possible solution which could unminimalize the app from background?

I was trying to use default flutter hooks, but with no correct result.

These are files and methods which I use

Feature: AboutUsLink
  As a tester I test the functionality of the About Us link


  Scenario: Login - About us - Button functionality
    Given I click on About us on Login Page



class aboutUs_steps {
  FlutterOgurets _world;

  aboutUs_steps(this._world);

  @Given(r'I click on About us on Login Page')
  void iClickOnAboutUsOnLoginPage() async {
    LoginPage loginPage = new LoginPage(_world.driver);
    await Future.delayed(Duration(seconds: FUTURE_DELAY));
    loginPage.tapOnAboutUs();
  }
}

and the method in LoginPage

  Future<void> tapOnAboutUs() async {
    await _driver.tap(aboutUs);
  }

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