wkhtmltopdf stalls at page 36 of 78

[rvwhitney]

UPDATE: this turns out to be an issue with the Linux binary (0.12.5)
we installed this on a Windows server - same setup otherwise - and it works fine.

I posted this in the wrong github yesterday.
Basically, I have a few pdf's to generate that are dying at a certain point - consistently.
Smaller pdf's generate just fine. I cannot figure out why this is happening.
Below is my code. I don't know if it has anything to do with the fact that I am using sockets?

```
    socket.on('make-pdf',function(data){
	console.log('DATA 2',data.html.length);

	var params = {
		pageSize: 'letter' ,
		footerHtml: data.footerHtml || '/pdf/footer/footer.html',
		footerRight: data.footerRight || 'Page [page] of [toPage]',
		footerLine: data.footerLine || true,
		headerHtml: data.headerHtml || '/pdf/header/header-' + data.header + '.html',
		headerSpacing: data.headerSpacing || 2,
		marginTop: data.marginTop || '3cm',
		marginBottom: data.marginBottom || '1cm',
		marginLeft: data.marginLeft || '1.25cm',
		marginRight: data.marginRight || '1.25cm',
		headerLine: data.headerLine || true,
		outline: data.outline || true,
		outlineDepth: data.outlineDepth || 4,
		javascriptDelay: 500,
		username: data.user,
		enableForms: data.enableForms || true,
		orientation: data.orientation || 'Portait',
		userStyleSheet: '/css/bootstrap.css',
		runScript: '/js/jquery-3.4.1.min.js'
	}
	console.log('params', params);
	console.log('end params');

	var pdf = wkpdf(data.html, params, function (err, stream){
	    console.log(stream);
	   // you can use message here and only in here

		if(err){
			console.log('ERROR IN WKPDF: ',err);
		} else {
			console.log('STREAM ERROR:',err, stream);
			toArray(stream, function (err, arr) {
				console.log('OUTPUT OF TO ARRAY',err,arr);
				var datas = {};
				datas.buffer = Buffer.concat(arr);
				datas.user = data.user;
				datas.filename = data.filename;
				socket.emit(data.returnEntry, datas);
			});
		}
	});
});

Any help is much appreciated.
Thank you!