It does not promt to download

[Rombersoft]

If I use

html2pdf().from('HelloWorld').save();

inside a static HTML file, it works fine.

But if I use
html2pdf().from('HelloWorld').save();

inside a web page generated by server this code does not prompt to download

document.addEventListener("DOMContentLoaded", function () {
            workSuccess = workSuccessOverride;
            document.getElementById("uploadButton").addEventListener("click", requestCrosswordMaker);
        });

function requestCrosswordMaker() {
            html2pdf().from('HelloWorld').save();

In the console output, I see this:

19663c19b31 536ms Document cloned, using computed rendering [html2pdf.bundle.min.js:2:447917](https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js)
19663c19b31 536ms Starting DOM parsing [html2pdf.bundle.min.js:2:447917](https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js)
19663c19b31 553ms Starting renderer [html2pdf.bundle.min.js:2:447917](https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js)
19663c19b31 555ms Canvas renderer initialized (794x22 at 92.64999389648438,0) with scale 1 [html2pdf.bundle.min.js:2:447917](https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js)
19663c19b31 573ms Finished rendering [html2pdf.bundle.min.js:2:447917](https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js)

I don't understand at all what could be preventing him from uploading the file. I've tried in Edge, Chrome and Firefox browsers