Problem with FileError

[cpn42]

FileError is deprecated and rise an error on Chromium - Version 56.0.2924.76 Built on 8.7, running on Debian 9.0 (64-bit) -. See https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/kJMa2rpAYqI/discussion

Thanks a lot for this beautiful project. I'd like to know how to use JS to help you more :)