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, "medium");
    this.id = attributes.id || "";
    this.imagingBBox = getBBox(attributes.imagingBBox);
    this.long = getMeasurement(attributes.long);
    this.orientation = getStringOption(attributes.orientation, [
      "portrait",
      "landscape",
    ]);
    this.short = getMeasurement(attributes.short);
    this.stock = attributes.stock || "";
    this.trayIn = getStringOption(attributes.trayIn, [
      "auto",
      "delegate",
      "pageFront",
    ]);
    this.trayOut = getStringOption(attributes.trayOut, ["auto", "delegate"]);
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
  }
}
class Message extends XFAObject {