For my site: quicklens.netlify.app, the Zip file download is not having the Content-Length header set, because of which I am not able to show a progress indicator on my client.
How can I enable this header on the zip file? This can be seen when clicking on the “Download Trial” link on the website. The Chrome DevTools don’t show the content-length header.
The file in consideration: https://quicklens.app/releases/QuickLens.zip