We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Plugging it in area is not accessible on dev server
This link should work: https://cs-unplugged-dev.appspot.com/plugging-it-in/

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `csunplugged/config/urls.py`
Content:
```
1 """URL configuration for the Django system.
2 
3 The `urlpatterns` list routes URLs to views. For more information please see:
4     https://docs.djangoproject.com/en/dev/topics/http/urls/
5 """
6 
7 from django.conf import settings
8 from django.urls import include, path
9 from django.conf.urls.i18n import i18n_patterns
10 from django.contrib import admin
11 
12 urlpatterns = i18n_patterns(
13     path('', include('general.urls', namespace='general')),
14     path('topics/', include('topics.urls', namespace='topics')),
15     path('resources/', include('resources.urls', namespace='resources')),
16     path('at-home/', include('at_home.urls', namespace='at_home')),
17 )
18 
19 urlpatterns += [
20     path('', include('classic.urls')),
21     path('en/search/', include('search.urls', namespace='search')),
22     path('admin/', admin.site.urls),
23 ]
24 
25 if not settings.DJANGO_PRODUCTION:
26     urlpatterns += [
27         path('plugging-it-in/', include('plugging_it_in.urls', namespace='plugging_it_in')),
28     ]
29 
30 if settings.DEBUG:  # pragma: no cover
31     import debug_toolbar
32     urlpatterns += [
33         path('__debug__/', include(debug_toolbar.urls)),
34     ]
35     urlpatterns += i18n_patterns(
36         path('__dev__/', include('dev.urls', namespace='dev')),
37     )
38     # These patterns allows these error pages to be debugged during development.
39     from django.views import defaults
40     urlpatterns += [
41         path('400/', defaults.bad_request, kwargs={'exception': Exception('Bad request')}),
42         path('403/', defaults.permission_denied, kwargs={'exception': Exception('Permissin denied')}),
43         path('404/', defaults.page_not_found, kwargs={'exception': Exception('Page not found')}),
44         path('500/', defaults.server_error),
45     ]
46
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/csunplugged/config/urls.py b/csunplugged/config/urls.py
--- a/csunplugged/config/urls.py
+++ b/csunplugged/config/urls.py
@@ -8,6 +8,8 @@
 from django.urls import include, path
 from django.conf.urls.i18n import i18n_patterns
 from django.contrib import admin
+import environ
+env = environ.Env()
 
 urlpatterns = i18n_patterns(
     path('', include('general.urls', namespace='general')),
@@ -22,7 +24,7 @@
     path('admin/', admin.site.urls),
 ]
 
-if not settings.DJANGO_PRODUCTION:
+if not env("DEPLOYMENT", default=None) == "prod":
     urlpatterns += [
         path('plugging-it-in/', include('plugging_it_in.urls', namespace='plugging_it_in')),
     ]

{"golden_diff": "diff --git a/csunplugged/config/urls.py b/csunplugged/config/urls.py\n--- a/csunplugged/config/urls.py\n+++ b/csunplugged/config/urls.py\n@@ -8,6 +8,8 @@\n from django.urls import include, path\n from django.conf.urls.i18n import i18n_patterns\n from django.contrib import admin\n+import environ\n+env = environ.Env()\n \n urlpatterns = i18n_patterns(\n     path('', include('general.urls', namespace='general')),\n@@ -22,7 +24,7 @@\n     path('admin/', admin.site.urls),\n ]\n \n-if not settings.DJANGO_PRODUCTION:\n+if not env(\"DEPLOYMENT\", default=None) == \"prod\":\n     urlpatterns += [\n         path('plugging-it-in/', include('plugging_it_in.urls', namespace='plugging_it_in')),\n     ]\n", "issue": "Plugging it in area is not accessible on dev server\nThis link should work: https://cs-unplugged-dev.appspot.com/plugging-it-in/\n", "before_files": [{"content": "\"\"\"URL configuration for the Django system.\n\nThe `urlpatterns` list routes URLs to views. For more information please see:\n    https://docs.djangoproject.com/en/dev/topics/http/urls/\n\"\"\"\n\nfrom django.conf import settings\nfrom django.urls import include, path\nfrom django.conf.urls.i18n import i18n_patterns\nfrom django.contrib import admin\n\nurlpatterns = i18n_patterns(\n    path('', include('general.urls', namespace='general')),\n    path('topics/', include('topics.urls', namespace='topics')),\n    path('resources/', include('resources.urls', namespace='resources')),\n    path('at-home/', include('at_home.urls', namespace='at_home')),\n)\n\nurlpatterns += [\n    path('', include('classic.urls')),\n    path('en/search/', include('search.urls', namespace='search')),\n    path('admin/', admin.site.urls),\n]\n\nif not settings.DJANGO_PRODUCTION:\n    urlpatterns += [\n        path('plugging-it-in/', include('plugging_it_in.urls', namespace='plugging_it_in')),\n    ]\n\nif settings.DEBUG:  # pragma: no cover\n    import debug_toolbar\n    urlpatterns += [\n        path('__debug__/', include(debug_toolbar.urls)),\n    ]\n    urlpatterns += i18n_patterns(\n        path('__dev__/', include('dev.urls', namespace='dev')),\n    )\n    # These patterns allows these error pages to be debugged during development.\n    from django.views import defaults\n    urlpatterns += [\n        path('400/', defaults.bad_request, kwargs={'exception': Exception('Bad request')}),\n        path('403/', defaults.permission_denied, kwargs={'exception': Exception('Permissin denied')}),\n        path('404/', defaults.page_not_found, kwargs={'exception': Exception('Page not found')}),\n        path('500/', defaults.server_error),\n    ]\n", "path": "csunplugged/config/urls.py"}], "after_files": [{"content": "\"\"\"URL configuration for the Django system.\n\nThe `urlpatterns` list routes URLs to views. For more information please see:\n    https://docs.djangoproject.com/en/dev/topics/http/urls/\n\"\"\"\n\nfrom django.conf import settings\nfrom django.urls import include, path\nfrom django.conf.urls.i18n import i18n_patterns\nfrom django.contrib import admin\nimport environ\nenv = environ.Env()\n\nurlpatterns = i18n_patterns(\n    path('', include('general.urls', namespace='general')),\n    path('topics/', include('topics.urls', namespace='topics')),\n    path('resources/', include('resources.urls', namespace='resources')),\n    path('at-home/', include('at_home.urls', namespace='at_home')),\n)\n\nurlpatterns += [\n    path('', include('classic.urls')),\n    path('en/search/', include('search.urls', namespace='search')),\n    path('admin/', admin.site.urls),\n]\n\nif not env(\"DEPLOYMENT\", default=None) == \"prod\":\n    urlpatterns += [\n        path('plugging-it-in/', include('plugging_it_in.urls', namespace='plugging_it_in')),\n    ]\n\nif settings.DEBUG:  # pragma: no cover\n    import debug_toolbar\n    urlpatterns += [\n        path('__debug__/', include(debug_toolbar.urls)),\n    ]\n    urlpatterns += i18n_patterns(\n        path('__dev__/', include('dev.urls', namespace='dev')),\n    )\n    # These patterns allows these error pages to be debugged during development.\n    from django.views import defaults\n    urlpatterns += [\n        path('400/', defaults.bad_request, kwargs={'exception': Exception('Bad request')}),\n        path('403/', defaults.permission_denied, kwargs={'exception': Exception('Permissin denied')}),\n        path('404/', defaults.page_not_found, kwargs={'exception': Exception('Page not found')}),\n        path('500/', defaults.server_error),\n    ]\n", "path": "csunplugged/config/urls.py"}]}