Conifgured the view and urls file of the project and bookshelf app

lance_santuyo_reading/bookshelf/urls.py

+from django.urls import path
+from .views import index
+
+urlpatterns = [
+    path('', index, name='index'),
+]
+
+app_name = "bookshelf"

lance_santuyo_reading/bookshelf/views.py

 from django.shortcuts import render
+from django.http import HttpResponse
 
-# Create your views here.
+def index(request):
+    return HttpResponse('Hello World! This came from the index view')
\ No newline at end of file

lance_santuyo_reading/lance_santuyo_reading/settings.py

@@ -41,6 +41,7 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'bookshelf',
 ]
 
 MIDDLEWARE = [

lance_santuyo_reading/lance_santuyo_reading/urls.py

@@ -14,8 +14,9 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path
+from django.urls import include, path
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('bookshelf/', include('bookshelf.urls', namespace="bookshelf")),
 ]