gulp generate:epub exception

[CezaryDanielNowak]

Following error is shown when using gulp generate:epub
I'm using Node 4.3.0 on Windows 10.

Cezary@Cezary-PC MINGW64 ~/Desktop/Downloads/book-of-modern-frontend-tooling (master)
$ gulp generate:epub
[00:23:10] Using gulpfile ~\Desktop\Downloads\book-of-modern-frontend-tooling\gulpfile.js
[00:23:10] Starting 'concat'...
[00:23:10] Finished 'concat' after 127 ms
[00:23:10] Starting 'generate:epub'...
events.js:141
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at exports._errnoException (util.js:870:11)
    at Socket._writeGeneric (net.js:675:26)
    at Socket._write (net.js:694:8)
    at doWrite (_stream_writable.js:292:12)
    at writeOrBuffer (_stream_writable.js:278:5)
    at Socket.Writable.write (_stream_writable.js:207:11)
    at Socket.write (net.js:618:40)
    at Socket.Writable.end (_stream_writable.js:433:10)
    at Socket.end (net.js:400:31)
    at pdc (C:\Users\Cezary\Desktop\Downloads\book-of-modern-frontend-tooling\node_modules\pdc\pdc.js:69:16)

Generating PDF works OK