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
}
    }
  }
  
  var differences = properties.differences,
    glyphsUnicodeMap;
  if (differences) {
    for (charCode in differences) {
      var glyphName = differences[charCode];
      glyphId = glyphNames.indexOf(glyphName);
      if (glyphId === -1) {
        if (!glyphsUnicodeMap) {
          glyphsUnicodeMap = getGlyphsUnicode();
        }
        var standardGlyphName = recoverGlyphName(glyphName, glyphsUnicodeMap);
        if (standardGlyphName !== glyphName) {
          glyphId = glyphNames.indexOf(standardGlyphName);
        }
      }
      if (glyphId >= 0) {
        charCodeToGlyphId[charCode] = glyphId;
      } else {
        charCodeToGlyphId[charCode] = 0; 
      }
    }
  }
  return charCodeToGlyphId;
}
var Type1Font = (function Type1FontClosure() {
  function findBlock(streamBytes, signature, startIndex) {