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

Question

while building a debug toolbar in Django I am getting an error in file toolbar.js ie. s.map: HTTP error: status code 404, net:: ERR_UNKNOWN_URL_SCHEME toolbar.js:1 Failed to load module script: The server responded with a non-JavaScript MIME type of "text/plain". Strict MIME type checking is enforced for module scripts per HTML spec.

can anyone tell me the possible fix for that?

user_14331914 · Answer

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)

user_13882789 · Answer

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.

user_11387552 · Answer

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!

user_16666940 · Answer

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

user_15762174 · Answer

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

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

5 Answers