Cannot navigate to new page

[anoopeashok]

when try navigate to new page using navigation service this error occures

The following assertion was thrown building Consumer(dirty, dependencies:
[_InheritedProviderScope]):
'package:flutter/src/widgets/navigator.dart': Failed assertion: line 4112 pos 12: '!_debugLocked':
is not true.

Either the assertion indicates an error in the framework itself, or we should provide substantially
more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.md

The relevant error-causing widget was:
Consumer
file:///home/heisenberg/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/stacked-2.1.6/lib/src/state_management/view_model
_builder.dart:164:14

When the exception was thrown, this was the stack:
#2 NavigatorState._routeNamed (package:flutter/src/widgets/navigator.dart:4112:12)
#3 NavigatorState.pushNamed (package:flutter/src/widgets/navigator.dart:4190:20)
#4 GetNavigation.toNamed (package:get/get_navigation/src/extension_navigation.dart:565:37)
#5 NavigationService.navigateTo (package:stacked_services/src/navigation_service.dart:156:16)
#6 SignupViewModel.navigateToLogin (package:meplinks/Views/signup/signup_viewmodel.dart:24:24)
#7 SignupView.build. (package:meplinks/Views/signup/signup_view.dart:22:42)
#8 _ViewModelBuilderState.builderWithDynamicSourceInitialise (package:stacked/src/state_management/view_model_builder.dart:179:26)
#9 Consumer.buildWithChild (package:provider/src/consumer.dart:180:19)
#10 SingleChildStatelessWidget.build (package:nested/nested.dart:259:41)
#11 StatelessElement.build (package:flutter/src/widgets/framework.dart:4569:28)
#12 SingleChildStatelessElement.build (package:nested/nested.dart:279:18)
#13 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4495:15)
#14 Element.rebuild (package:flutter/src/widgets/framework.dart:4189:5)
#15 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4474:5)
#16 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4469:5)
#17 SingleChildWidgetElementMixin.mount (package:nested/nested.dart:222:11)
#18 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3541:14)
#19 Element.updateChild (package:flutter/src/widgets/framework.dart:3306:18)
#20 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4520:16)
#21 _InheritedProviderScopeElement.performRebuild (package:provider/src/inherited_provider.dart:456:11)
#22 Element.rebuild (package:flutter/src/widgets/framework.dart:4189:5)
#23 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4474:5)
#24 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4469:5)
#25 _InheritedProviderScopeElement.mount (package:provider/src/inherited_provider.dart:356:11)
... Normal element mounting (7 frames)
#32 SingleChildWidgetElementMixin.mount (package:nested/nested.dart:222:11)
... Normal element mounting (180 frames)
#212 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3541:14)
#213 Element.updateChild (package:flutter/src/widgets/framework.dart:3306:18)
#214 RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:5561:32)
#215 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6105:17)
#216 Element.updateChild (package:flutter/src/widgets/framework.dart:3293:15)
#217 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4520:16)
#218 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4667:11)
#219 Element.rebuild (package:flutter/src/widgets/framework.dart:4189:5)
#220 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2694:33)
#221 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:873:21)
#222 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:319:5)
#223 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1144:15)
#224 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1082:9)
#225 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:998:5)
#229 _invoke (dart:ui/hooks.dart:161:10)
#230 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:253:5)
#231 _drawFrame (dart:ui/hooks.dart:120:31)
(elided 5 frames from class _AssertionError and dart:async)

Packages:
stacked: ^2.1.6
stacked_services: ^0.8.6