Error: Lightning Web Security: Cannot access writeln - pdf

Question

I'm using jsPDF library in my LWC Component by uploading it to static resources to generate a pdf from html code.
I'm able to create pdf with this code
generatePDF_1 () {
try {
const doc = new jsPDF ();
doc.setTextColor (100);
doc.text ('Hello World!', 10, 10);
doc.save ('JsPDF.pdf');
} catch (error) {
alert ('Error ' + error);
}
}
but when getting error with fromhtml
generatePDF_2 () {
try {
var doc = new jsPDF ();
doc.fromHTML ('<h1>Hello World</h1>');
doc.save ('PdfHTML.pdf');
} catch (error) {
console.log ('Error Generated2 == ', error.message);
}
}
here is the error:
Error Generated2 == Lightning Web Security: Cannot access writeln.
I'm using these two library
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.4.1/jspdf.debug.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/2.3.4/jspdf.plugin.autotable.min.js">
I have checked them out & found out that there is this code in jspdf.debug.js where writeln function is used, & LWC security is not allowing to use it.
$hiddendiv = document.createElement('div');
$hiddendiv.style.cssText = visuallyhidden;
$hiddendiv.innerHTML = "<iframe style=\"height:1px;width:1px\" name=\"" + framename + "\" />";
document.body.appendChild($hiddendiv);
$frame = window.frames[framename];
$frame.document.open();
$frame.document.writeln(element);
$frame.document.close();
return $frame.document.body;
I have no idea what to do now