[Fixed]-Failed to load module script: The server responded with a non-JavaScript MIME type of "text/plain". Strict MIME type checking i

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I found solution here How to set content type of JavaScript files in Django

#settings.py
if DEBUG:
    import mimetypes
    mimetypes.add_type("application/javascript", ".js", True)

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Expanding on drewslee answer

The solution to the problem is indicated in the documentation

  • For Windows, you need to edit the registry. Set HKEY_CLASSES_ROOT\.js\Content Type to text/javascript.

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I have faced the problem and it was fixed after edit the Windows registry. I just Set HKEY_CLASSES_ROOT.js\Content Type from text/plain to text/javascript.

Now the problem is solved!

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I faced the same error. It was resolved once I updated the HKEY_CLASSES_ROOT.js\Content Type from text/plain to text/javascript in my Windows using RegistryEditor.

After that I had to refresh my browser cache to be able to see the toolbar

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Clear your browsers Cache

If you configured the settings.py and the urls.py as the documentation page implies… Just go to your browser clear the data section right under the privacy policy and clear your browser’s cache.

That works for me 🙂

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In my case, i try running it on another server like 8080 and it works

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