Attach (recommended) or Link to PDF file here:  [test.pdf](https://akmer.aikucun.com/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3_1616477914120_83.pdf)


Configuration:
- Web browser and its version: chrome 87.0.4280.88
- Operating system and its version: windows10
- PDF.js version: 2.6.347
- Is a browser extension:

Steps to reproduce the problem:
1. just open 

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/17724610/112087066-473f8f80-8bc8-11eb-8efb-56139ec42a9c.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

}
    const xref = this.xref,
      parsedOrderRefs = new RefSet(),
      MAX_NESTED_LEVELS = 10;
    return {
      name: isString(config.get("Name"))
        ? stringToPDFString(config.get("Name"))
        : null,
      creator: isString(config.get("Creator"))
        ? stringToPDFString(config.get("Creator"))
        : null,
      baseState: isName(config.get("BaseState"))
        ? config.get("BaseState").name
        : null,
      on: parseOnOff(config.get("ON")),
      off: parseOnOff(config.get("OFF")),
      order: parseOrder(config.get("Order")),
      groups: null,
    };
  }
  get numPages() {
    const obj = this.toplevelPagesDict.get("Count");
    if (!Number.isInteger(obj)) {
      throw new FormatError(
        "Page count in top-level pages dictionary is not an integer."
      );
    }
    return shadow(this, "numPages", obj);
  }
  get destinations() {