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.
constructor(attributes) {
    super(TEMPLATE_NS_ID, "decimal");
    this.fracDigits = getInteger({
      data: attributes.fracDigits,
      defaultValue: 2,
      validate: x => true,
    });
    this.id = attributes.id || "";
    this.leadDigits = getInteger({
      data: attributes.leadDigits,
      defaultValue: -1,
      validate: x => true,
    });
    this.name = attributes.name || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
  }
  [$finalize]() {
    const number = parseFloat(this[$content].trim());
    this[$content] = isNaN(number) ? null : number;
  }
  [$toHTML](availableSpace) {
    return valueToHtml(
      this[$content] !== null ? this[$content].toString() : ""
    );
  }
}
class DefaultUi extends XFAObject {