Error: conversion error: pdf2htmlEX: unrecognized option `--font-suffix' about pdftohtmljs HOT 7 CLOSED

function pdftohtml (path, filename, outfile, options) {
  this.path = path;
  this.options = options || {};
  this.options.additional = [path + '/' + filename];
  if (typeof outfile !== "undefined" && outfile !== null) {
    this.options.additional.push(path + '/' + outfile);
  }

var child = shell.exec('cd ' + self.path + ' && pdf2htmlEX ' + self.options.additional.join(' '), {async:true, silent:true});

exports.resource = function(req, res) {
  console.log(req.query);

  var extension = path.extname(req.query.resource);
  var filename = path.basename(req.query.resource, '.pdf');
  var dir = path.dirname(req.query.resource);

  if(extension === '.pdf'){
    var converter = new pdftohtml(dir, filename + extension, filename + '.html');
    converter.preset('default');

    converter.success(function() {
      console.log('convertion done');
      res.send(fse.readFileSync(dir + '/' + filename + '.html', 'UTF-8'));
    });

    converter.error(function(error) {
      console.log('conversion error: ' + error);
    });

    converter.progress(function(ret) {
      console.log ((ret.current*100.0)/ret.total + ' %');
    });
    converter.convert();

  }else{
    res.send(fse.readFileSync(req.query.resource, 'UTF-8'));
  }

};

exports.load = function(pdf2htmlex) {
    pdf2htmlex.add_options([
        '--zoom 1.3',
        '--font-format woff'
    ]);
    return pdf2htmlex
}