🐛Expected a JavaScript module script but the server responded with a MIME type of "text/plain"

[34205037]

Fiber version
v2.26.0
Windows version
Windows 10 21H2(19044.1526)

Issue description
Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/plain". Strict MIME type checking is enforced for module scripts per HTML spec.

mime: incorrect mime-type for .js files on windows 10 (text/plain instead of application/javascript) #32350
The requirement of the mime package should be to correctly ascertain the mime type of common files, regardless of Windows registry settings.
The terrible thing is that two years later, this problem still exists.

app.Static serving JS as text/plain #352
We should not ask users to modify the registry.

For a novice in golang , how should I fix it?
sorry,my english is not good.

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