Can't send the css file correctly

[bagomot]

I am trying to serve my stylesheet in my template:
<link rel="stylesheet" href="css/style.css" />
I have configured mime.properties:
css=text/css
and encoding.properties:
text/css=utf-8
The style file itself is in UTF-8 encoding without BOOM.
The server sends the file via a direct link, but when trying to apply styles, it writes:

Failed to load resource: net::ERR_INVALID_CHUNKED_ENCODING

The server console writes this:

2021-Mar-24 20:28:08.7966476 | 11960 | warning | checkErro | erro=-1, dwLastError=10053 | C:\Users\user\AppData\Local\dub\packages\hunt-1.7.5\hunt\source\hunt\io\channel\iocp\Common.d:42
2021-Mar-24 20:28:08.7976483 | 11960 | error | AbstractStream.doWrite | Socket error on write: fd=1096, message=An established connection was aborted by the software in your host machine. | C:\Users\user\AppData\Local\dub\packages\hunt-1.7.5\hunt\source\hunt\io\channel\iocp\AbstractStream.d:243

I also noticed that if I reload the page many times, there is a chance that the styles will be loaded successfully, but the next time it will be a failure.

What am I doing wrong?

[Heromyth]

It seems the underlying IO functions are unstable on Windows. It's true for our tests.
You can have a test on Linux. It's more stable.