Uncaught "undefined" is not a valid input for e in line JsBarcode.ean-upc.min.js:2:34333

Hi,

I'm using the JsBarcode library to show a barcode image and despite the fact that it's working fine, I'm getting an error in the console quite strange that I can not find out what's happening.

First of all, I'm loading the library from the cdn:

``

Then, I'm generating the barcode as follows:

**TPL/HTML file:**
```

```

Where key is being replaced by "ean13" and the reference is being replaced by the ean13 number in integer format.

**JS CODE:**
```
$(document).ready(function(){
setTimeout( function()
{
JsBarcode(".barcode").init();
}, 500);
});
```

The svg is loading well, but I'm getting the following error in the console:

```
Uncaught "undefined" is not a valid input for e [JsBarcode.ean-upc.min.js:2:34333](https://cdn.jsdelivr.net/npm/jsbarcode@3.11.6/dist/barcodes/JsBarcode.ean-upc.min.js)
value https://cdn.jsdelivr.net/npm/jsbarcode@3.11.6/dist/barcodes/JsBarcode.ean-upc.min.js:2
value https://cdn.jsdelivr.net/npm/jsbarcode@3.11.6/dist/barcodes/JsBarcode.ean-upc.min.js:2
init https://cdn.jsdelivr.net/npm/jsbarcode@3.11.6/dist/barcodes/JsBarcode.ean-upc.min.js:2
```

I have read the documentation several times and everything seems to be okay. Can you help me?

Thank you in advance.

Reproduce the console error with the TPL/HTML SVG snippet and the provided JavaScript initialization code. Start by inspecting the ean-upc.min.js stack trace and compare the generated jsbarcode-format and jsbarcode-value attributes with the ean13 example. Done means the barcode still renders without the reported undefined-input error.

Written by the indexing model from the issue text.