SuspiciousFileOperation: Attempted access outside of template directories

SuspiciousFileOperation: template access outside directories

$ python manage.py runserver
SuspiciousFileOperation: The joined path is located outside of the base path component

Why this happens

Using ../ or absolute paths to templates outside allowed roots.

Fix

Keep templates within configured directories and reference them by name.

Wrong code

render(request, "../secret.html")

Fixed code

render(request, "app/secret.html")