InvalidKeeperGuardException in AuthServiceProvider.php when calling /wiki in Laravel 5.3 or 5.2

[amenk]

I am getting the following exception when opening /wiki after putting the WikiServiceProvider to app.php in Laravel 5.3 (same seemed to happen in 5.2)

InvalidKeeperGuardException in AuthServiceProvider.php line 60:
in AuthServiceProvider.php line 60
at AuthServiceProvider->ViKon\Auth\{closure}(object(Application), array()) in Container.php line 746
at Container->build(object(Closure), array()) in Container.php line 644
at Container->make('ViKon\Auth\Contracts\Keeper', array()) in Application.php line 709
at Application->make('ViKon\Auth\Contracts\Keeper') in BaseController.php line 35
at BaseController->__construct(object(Application))
at ReflectionClass->newInstanceArgs(array(object(Application))) in Container.php line 794
at Container->build('ViKon\Wiki\Http\Controller\PageController', array()) in Container.php line 644
at Container->make('ViKon\Wiki\Http\Controller\PageController', array()) in Application.php line 709
at Application->make('ViKon\Wiki\Http\Controller\PageController') in Route.php line 203
at Route->getController() in Route.php line 316
at Route->controllerMiddleware() in Route.php line 278
at Route->gatherMiddleware() in Router.php line 666
at Router->gatherRouteMiddleware(object(Route)) in Router.php line 646
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 629
at Router->dispatchToRoute(object(Request)) in Router.php line 607
at Router->dispatch(object(Request)) in Kernel.php line 268
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request)) in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 46
at CheckForMaintenanceMode->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in Pipeline.php line 104
at Pipeline->then(object(Closure)) in Kernel.php line 150
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 117
at Kernel->handle(object(Request)) in index.php line 53

Do you have any advice?

[Dodgin]

@amenk Did you ever find out why the Keeper instance creation is failing?