Currently configuration (at least routes) is partly overriden by acacha/adminlte-laravel, and if I try to unregister Acacha\AdminLTETemplateLaravel\Providers\AdminLTETemplateServiceProvider::class provider (as suggessted #47, #63, #59), then session is recreated with each request (laravel/framework#13352).

So that Session::flash(), etc. stops working properly!

That was horrible to debug. 😄