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.
const sweepAngle = (this.sweepAngle * Math.PI) / 180;
      const largeArc = this.sweepAngle - this.startAngle > 180 ? 1 : 0;
      const [x1, y1, x2, y2] = [
        50 * (1 + Math.cos(startAngle)),
        50 * (1 - Math.sin(startAngle)),
        50 * (1 + Math.cos(sweepAngle)),
        50 * (1 - Math.sin(sweepAngle)),
      ];
      arc = {
        name: "path",
        attributes: {
          xmlns: SVG_NS,
          d: `M ${x1} ${y1} A 50 50 0 ${largeArc} 0 ${x2} ${y2}`,
          vectorEffect: "non-scaling-stroke",
          style,
        },
      };
      Object.assign(attributes, {
        viewBox: "0 0 100 100",
        preserveAspectRatio: "none",
      });
    }
    return HTMLResult.success({
      name: "svg",
      children: [arc],
      attributes,
    });
  }
}
class Area extends XFAObject {