assets/status returns empty mime type, fills console with "XML Parsing Error: syntax error" when auto-reload turned on.

Operating System: macOS 10.15.7
Browser: Firefox 88.0.1 (64-bit)
Node Version: v12.18.1
powerbi-visuals-tools Version: 3.1.19
powerbi-visuals-webpack-plugin Version: 2.2.6

webpack-dev-server is unable to determine the correct mime type for the status file since there is no extension.

It returns the content header with no mime type: Content-Type: ; charset=UTF-8. By default, the browser treats this as text/html and tries to parse the content as HTML. This results in an "XML Parsing Error: syntax error" in the console.

When auto-reload is enabled the console gets filled with these errors, making it unusable for debugging/development.

I had a look at how webpack-dev-server determines the mime type and it doesn't seem possible to override it without an extension. The best option would probably be to just give the filename an extension e.g. status.txt it would then be served as text/plain and shouldn't trigger the XML parser error.

Start by tracing how the webpack-dev-server status endpoint is named and served when auto-reload is enabled; the issue does not identify a source file or test. Confirm the status response has a non-empty text MIME type and that repeated auto-reload checks no longer produce browser parsing errors.