Using ‘get’ from ‘request-promise’ doesn’t work | Velo by Wix

I’m trying to upload a pdf file into buffer. I was expecting to get in the console message either ‘get’ or ‘not’, but I get the message ‘undefined’…

In page code:

PDF_name = “https://ff4066b3-fa1e-4f83-866c-5d6548bfdbe3.usrfiles.com/ugd/ff4066_85749710b488467f98302a1ec22f8708.pdf”;

export function btnUploadPDF_click(event) {
    FillPDF(PDF_name,’fields’).then(msg =>{
        console.log(msg);
    })
    .catch(error => {
        console.log(‘error’);
    });
}

In the backend file:

import rp from ‘request-promise’;

export function FillPDF (name, fields)
{
   rp.get({ URL_path, encoding: null })
    .then( (pdf_buf) => {
return(‘get’);
//     var out_buf = pdfform().transform(pdf_buf, fields);  // next step will be fill the pdf file…
//     uploadPDF( out_buf);  Step after will be to upload the filled pdf file to UploadFolder…
    })
    .catch( (err) => {return(‘not’)})
}