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.
: new Corner({});
    const cornerStyle = corner[$toStyle]();
    const rect = {
      name: "rect",
      attributes: {
        xmlns: SVG_NS,
        width: "100%",
        height: "100%",
        x: 0,
        y: 0,
        rx: cornerStyle.radius,
        ry: cornerStyle.radius,
        style,
      },
    };
    return HTMLResult.success({
      name: "svg",
      children: [rect],
      attributes: {
        xmlns: SVG_NS,
        style: {
          position: "absolute",
        },
        width: "100%",
        height: "100%",
      },
    });
  }
}
class RefElement extends StringObject {