Attach (recommended) or Link to PDF file here:
PDF from #4106, https://mail.gnome.org/archives/evince-list/2013-November/pdfNC0hkVW67a.pdf.

Steps to reproduce the problem:
1. Open the PDF

What is the expected behavior?
![immagine](https://user-images.githubusercontent.com/1616846/121865567-67ca4200-ccfe-11eb-8673-1d6e863fc8d5.png)

What went wrong?
The PDF doesn't load, `TypeError: can't access property Symbol(), match is null` error is logged in the console.
id = `${fieldId}-radio`;
    } else {
      type = "checkbox";
      className = "xfaCheckbox";
    }
    const input = {
      name: "input",
      attributes: {
        class: [className],
        style,
        fieldId,
        type,
      },
    };
    if (id) {
      input.attributes.id = id;
    }
    if (groupId) {
      input.attributes.name = groupId;
    }
    return HTMLResult.success({
      name: "label",
      attributes: {
        class: ["xfaLabel"],
      },
      children: [input],
    });
  }
}
class ChoiceList extends XFAObject {