Attach (recommended) or Link to PDF file here:
[test.pdf](https://github.com/mozilla/pdf.js/files/6270827/test.pdf)
Configuration:
- Web browser and its version:chrome 89
- Operating system and its version:win10
- PDF.js version: 2.4/2.7/2.8 no working
- Is a browser extension: no 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/18545199/113852392-1ae26080-97cf-11eb-9dc9-0cecf52d267b.png)

What went wrong? (add screenshot)
![1617791294(1)](https://user-images.githubusercontent.com/18545199/113852355-10c06200-97cf-11eb-8672-598750f1093a.jpg)


console this log : **FormatError: TrueType Collection does not contain "DCWGQU+CambriaMath" font** 

any solution?thanks
}
    if (trailingRangesCount > 0) {
      endCount += "\xFF\xFF";
      startCount += "\xFF\xFF";
      idDeltas += "\x00\x01";
      idRangeOffsets += "\x00\x00";
    }
    var format314 =
      "\x00\x00" + 
      string16(2 * segCount) +
      string16(searchParams.range) +
      string16(searchParams.entry) +
      string16(searchParams.rangeShift) +
      endCount +
      "\x00\x00" +
      startCount +
      idDeltas +
      idRangeOffsets +
      glyphsIds;
    var format31012 = "";
    var header31012 = "";
    if (numTables > 1) {
      cmap +=
        "\x00\x03" + 
        "\x00\x0A" + 
        string32(4 + numTables * 8 + 4 + format314.length); 
      format31012 = "";
      for (i = 0, ii = ranges.length; i < ii; i++) {
        range = ranges[i];
        start = range[0];