What could be the reason for Django apps not functioning despite adding the appropriate namespace?

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There could be multiple reasons why a Django app may not function despite adding the appropriate namespace. Here are a few common reasons:

1. Incorrect URL configuration: If the URL configuration for the app is incorrect, it may cause issues with accessing the app's views and templates.

2. Improper use of namespaces: Namespace should be used only for those URLs that belong to the app. If a namespace is added to a URL that does not belong to the app, it may cause issues.

3. Missing app files: If the app files (such as views, models, and templates) are not present or not properly named, it may cause errors.

4. Misconfigured settings: If the settings file is misconfigured, it may not allow the app to function properly.

5. Incorrect installation: If the app is not installed correctly or is missing dependencies, it may cause issues.