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, "line",  true);
    this.hand = getStringOption(attributes.hand, ["even", "left", "right"]);
    this.id = attributes.id || "";
    this.slope = getStringOption(attributes.slope, ["\\", "/"]);
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.edge = null;
  }
  [$toHTML]() {
    const parent = this[$getParent]()[$getParent]();
    const edge = this.edge ? this.edge : new Edge({});
    const edgeStyle = edge[$toStyle]();
    const style = Object.create(null);
    style.strokeWidth = measureToString(Math.round(edge.thickness));
    style.stroke = edgeStyle.color;
    let x1, y1, x2, y2;
    let width = "100%";
    let height = "100%";
    if (parent.w <= edge.thickness) {
      [x1, y1, x2, y2] = ["50%", 0, "50%", "100%"];
      width = style.strokeWidth;
    } else if (parent.h <= edge.thickness) {
      [x1, y1, x2, y2] = [0, "50%", "100%", "50%"];
      height = style.strokeWidth;
    } else {
      if (this.slope === "\\") {
        [x1, y1, x2, y2] = [0, 0, "100%", "100%"];