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):

lzwState.codeLength = codeLength;
    lzwState.prevCode = prevCode;
    lzwState.currentSequenceLength = currentSequenceLength;
    this.bufferLength = currentBufferLength;
  };
  return LZWStream;
})();
var NullStream = (function NullStreamClosure() {
  
  function NullStream() {
    Stream.call(this, new Uint8Array(0));
  }
  NullStream.prototype = Stream.prototype;
  return NullStream;
})();
export {
  Ascii85Stream,
  AsciiHexStream,
  DecodeStream,
  DecryptStream,
  FlateStream,
  LZWStream,
  NullStream,
  PredictorStream,
  RunLengthStream,
  Stream,
  StreamsSequenceStream,
  StringStream,
};