out of box failure - first time user

[John-L]

I'm sure I'm missing something, I've tried the following (two different sources for script, two different invocations)

<!-- <script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.9.3/html2pdf.bundle.min.js" integrity="sha512-YcsIPGdhPK4P/uRW6/sruonlYj+Q7UHWeKfTAkBW+g83NKM+jMJFJ4iAPfSnVp7BKD4dKMHmVSvICUbE/V1sSw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script> -->
<script src="./html2pdf.bundle.min (1).js"></script>
<script>
window.alert("before...");
<!-- result = html2pdf(document.body); -->
result = html2pdf().from(document.body).save();
console.log(JSON.stringify(result));
window.alert("...after ");
</script>

In all the above, console shows:

{"9q0e4kzfxeo":11,"_subscribers":[]}
0ms html2canvas: html2canvas $npm_package_version html2pdf.bundle.min (1).js:6
111ms html2canvas: Canvas renderer initialized (794x257 at 142.35000610351562,0) with scale 1.25 html2pdf.bundle.min (1).js:6

Nothing other than the console output happends. TIA.