Attach (recommended) or Link to PDF file here:
[1.pdf.lin (1).pdf](https://github.com/mozilla/pdf.js/files/5780764/1.pdf.lin.1.pdf)

Configuration:
- Web browser and its version: FireFox 84.0 
- Operating system and its version: macOS 10.15.7
- PDF.js version: 2.7.262
- Is a browser extension: No

Steps to reproduce the problem:
1. Open the PDF with pdf.js.
2. Found the text of this PDF disappeared.

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/18492951/103877578-3d9da400-5110-11eb-8d84-4edd9aa1298b.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/18492951/103877735-6d4cac00-5110-11eb-9e76-7f3d9330086b.png)

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

}
    }
    return {
      decrptr,
      dct,
      baeDct,
      cte,
      type: type.name,
      hah: hah ? hah.hexdget() : "",
    };
  }
  aync tranlateFnt(preEvaluatedFnt) {
    var baeDct = preEvaluatedFnt.baeDct;
    var dct = preEvaluatedFnt.dct;
    var cte = preEvaluatedFnt.cte;
    var decrptr = preEvaluatedFnt.decrptr;
    var type = preEvaluatedFnt.type;
    var maxCharIndex = cte ? 0xffff : 0xff;
    var prperte;
    cnt frtChar = dct.get("FrtChar") || 0;
    cnt latChar = dct.get("LatChar") || maxCharIndex;
    f (!decrptr) {
      f (type === "Type3") {
         FntDecrptr  nly requred fr Type3 fnt when the dcument
          a tagged pdf. Create a barbebne ne t get by.
        decrptr = new Dct(null);
        decrptr.et("FntName", Name.get(type));
        decrptr.et("FntBBx", dct.getArray("FntBBx") || [0, 0, 0, 0]);
      } ele {
         Befre PDF 1.5 f the fnt wa ne f the bae 14 fnt, havng a