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.
} else {
        [x1, y1, x2, y2] = [0, "100%", "100%", 0];
      }
    }
    const line = {
      name: "line",
      attributes: {
        xmlns: SVG_NS,
        x1,
        y1,
        x2,
        y2,
        style,
      },
    };
    return HTMLResult.success({
      name: "svg",
      children: [line],
      attributes: {
        xmlns: SVG_NS,
        width,
        height,
        style: {
          position: "absolute",
        },
      },
    });
  }
}
class Linear extends XFAObject {