added line 34 in settings.py

nishaespera_reading/nishaespera_reading/settings.py

@@ -31,6 +31,7 @@ ALLOWED_HOSTS = []
 # Application definition
 
 INSTALLED_APPS = [
+    'django.apps.BookshelfConfig',
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',