Why am I getting a 404 error with /None appended to the URL in my Django application? [closed]

it appears that after every successful request to a valid URL (e.g., /tasks/manager-dashboard/, /users/admin/dashboard/, etc.), an additional request is made to the same URL but with None appended to the end (e.g., /tasks/manager-dashboard/None). This results in a 404 Not Found error. Why are all my routes being redirected to /None? What could be causing this issue, and how can I fix it?

Here’s the relevant log from my terminal:

[03/Feb/2025 06:13:55] "GET / HTTP/1.1" 200 22745
Not Found: /None
[03/Feb/2025 06:13:55] "GET /None HTTP/1.1" 404 16655
[03/Feb/2025 06:13:59] "GET /tasks/dashboard/ HTTP/1.1" 302 0
[03/Feb/2025 06:14:01] "GET /tasks/manager-dashboard/ HTTP/1.1" 200 30428
Not Found: /tasks/manager-dashboard/None
[03/Feb/2025 06:14:01] "GET /tasks/manager-dashboard/None HTTP/1.1" 404 18835
[03/Feb/2025 06:14:07] "POST /users/logout/ HTTP/1.1" 302 0
[03/Feb/2025 06:14:07] "GET / HTTP/1.1" 200 22083
login form initialized
[03/Feb/2025 06:14:08] "GET /users/login/ HTTP/1.1" 200 21320
login form initialized
[03/Feb/2025 06:14:19] "POST /users/login/ HTTP/1.1" 302 0
[03/Feb/2025 06:14:20] "GET /tasks/dashboard/ HTTP/1.1" 302 0
[03/Feb/2025 06:14:22] "GET /users/admin/dashboard/ HTTP/1.1" 200 34903
Not Found: /users/admin/dashboard/None
[03/Feb/2025 06:14:22] "GET /users/admin/dashboard/None HTTP/1.1" 404 19097
[03/Feb/2025 06:14:31] "GET /users/admin/user-list/ HTTP/1.1" 200 26112
Not Found: /users/admin/user-list/None
[03/Feb/2025 06:14:31] "GET /users/admin/user-list/None HTTP/1.1" 404 19097
[03/Feb/2025 06:14:58] "GET /users/admin/user-list/ HTTP/1.1" 200 26111
Not Found: /users/admin/user-list/None
[03/Feb/2025 06:14:58] "GET /users/admin/user-list/None HTTP/1.1" 404 19097
[03/Feb/2025 06:15:00] "GET /users/admin/group-list/ HTTP/1.1" 200 29232
Not Found: /users/admin/group-list/None
[03/Feb/2025 06:15:01] "GET /users/admin/group-list/None HTTP/1.1" 404 19101
[03/Feb/2025 06:15:04] "GET /users/admin/user-list/ HTTP/1.1" 200 26112
Not Found: /users/admin/user-list/None
[03/Feb/2025 06:15:05] "GET /users/admin/user-list/None HTTP/1.1" 404 19097
[03/Feb/2025 06:15:23] "GET /tasks/dashboard/ HTTP/1.1" 302 0
[03/Feb/2025 06:15:24] "GET /users/admin/dashboard/ HTTP/1.1" 200 34903
Not Found: /users/admin/dashboard/None
[03/Feb/2025 06:15:25] "GET /users/admin/dashboard/None HTTP/1.1" 404 19097
[03/Feb/2025 06:17:11] "POST /users/logout/ HTTP/1.1" 302 0
[03/Feb/2025 06:17:11] "GET / HTTP/1.1" 200 22083
login form initialized
[03/Feb/2025 06:17:12] "GET /users/login/ HTTP/1.1" 200 21320
login form initialized
[03/Feb/2025 06:17:31] "POST /users/login/ HTTP/1.1" 302 0
[03/Feb/2025 06:17:32] "GET /tasks/dashboard/ HTTP/1.1" 302 0
[03/Feb/2025 06:17:34] "GET /users/admin/dashboard/ HTTP/1.1" 200 34903
Not Found: /users/admin/dashboard/None
[03/Feb/2025 06:17:34] "GET /users/admin/dashboard/None HTTP/1.1" 404 19097
[03/Feb/2025 06:17:39] "POST /users/logout/ HTTP/1.1" 302 0
[03/Feb/2025 06:17:39] "GET / HTTP/1.1" 200 22083
login form initialized
[03/Feb/2025 06:17:41] "GET /users/login/ HTTP/1.1" 200 21320
login form initialized
[03/Feb/2025 06:18:08] "POST /users/login/ HTTP/1.1" 302 0
[03/Feb/2025 06:18:09] "GET /tasks/dashboard/ HTTP/1.1" 302 0
[03/Feb/2025 06:18:11] "GET /tasks/manager-dashboard/ HTTP/1.1" 200 30428
Not Found: /tasks/manager-dashboard/None
[03/Feb/2025 06:18:12] "GET /tasks/manager-dashboard/None HTTP/1.1" 404 18835
[03/Feb/2025 06:18:18] "GET /tasks/task-list HTTP/1.1" 200 40108
Not Found: /tasks/None
[03/Feb/2025 06:18:18] "GET /tasks/None HTTP/1.1" 404 18763
[03/Feb/2025 06:19:26] "GET /tasks/create-task/ HTTP/1.1" 200 27342
Not Found: /tasks/create-task/None
[03/Feb/2025 06:19:27] "GET /tasks/create-task/None HTTP/1.1" 404 18811
[03/Feb/2025 06:20:59] "GET /tasks/task-list HTTP/1.1" 200 40107
Not Found: /tasks/None
[03/Feb/2025 06:20:59] "GET /tasks/None HTTP/1.1" 404 18763
[03/Feb/2025 06:21:05] "GET /tasks/task-list?type=pending HTTP/1.1" 200 27220
Not Found: /tasks/None
[03/Feb/2025 06:21:06] "GET /tasks/None HTTP/1.1" 404 18763

Steps I've Taken to Debug:

  1. Checked URL Patterns: I verified my URL patterns to ensure they are defined correctly and that no parameters are expected:
path('admin/user-list/', views.user_list, name='user-list')
path('admin/group-list/', views.group_list, name='group-list')
  1. Checked Template for URL Tags: I checked my templates to ensure I’m not mistakenly passing None to the URL tag. For example:
<a href="{% url 'user-list' %}">User List</a>  <!-- No arguments here -->
  1. Checked Views for reverse() and redirect(): I reviewed my views and ensured I'm not mistakenly passing None when using reverse() or redirect():
return redirect(reverse('user-list'))  # No parameters are required

Expected Behavior: I expect the routes to work without appending /None in the URL. For example:

  • /users/admin/user-list/
  • /users/admin/group-list/
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