pdflibAddPlaceholder not working TypeError: fields.push is not a function

[jdelos]

Cannot add sing-placeholder in the pdf
A clear and concise description of what the bug is.

Output

 /@signpdf/placeholder-pdf-lib/dist/pdflibAddPlaceholder.js:174
  fields.push(widgetDictRef);

Using you example and does not wor

import  fs from 'fs';
import   path  from 'path';
import { fileURLToPath } from 'url'
import { PDFDocument } from 'pdf-lib';
import { pdflibAddPlaceholder } from '@signpdf/placeholder-pdf-lib';
import  signpdf  from '@signpdf/signpdf';
import  { P12Signer }  from '@signpdf/signer-p12';
const __dirname = fileURLToPath(new URL('.', import.meta.url))


function work() {
    // contributing.pdf is the file that is going to be signed
    var sourcePath = path.join(__dirname,'../documents/EPOS-en.pdf');
    var pdfBuffer = fs.readFileSync(sourcePath);
    console.log("Correct inputs",sourcePath,pdfBuffer)
    // certificate.p12 is the certificate that is going to be used to sign
    var certificatePath = path.join(__dirname,'../documents/signing-certificate.p12');
    var certificateBuffer = fs.readFileSync(certificatePath);
    var signer = new P12Signer(certificateBuffer);

    // Load the document into PDF-LIB
    PDFDocument.load(pdfBuffer).then(function (pdfDoc) {
        // Add a placeholder for a signature.
        pdflibAddPlaceholder({
            pdfDoc: pdfDoc,
            reason: 'The user is declaring consent through JavaScript.',
            contactInfo: 'signpdf@example.com',
            name: 'John Doe',
            location: 'Free Text Str., Free World',
        });

        // Get the modified PDFDocument bytes
        pdfDoc.save().then(function (pdfWithPlaceholderBytes) {
            // And finally sign the document.
            signpdf
                .sign(pdfWithPlaceholderBytes, signer)
                .then(function (signedPdf) {
                    // signedPdf is a Buffer of an electronically signed PDF. Store it.
                    var targetPath = path.join(__dirname,'./pdf-lib.pdf');
                    fs.writeFileSync(targetPath, signedPdf);
                })
        })
    })
}

work();