Echo JS 0.11.0

I'm getting the following error is Safari and Chrome:
"Uncaught TypeError: Cannot read property 'forEach' of null at FileReader.fileReader.onload"

We'll check, thanks for reporting. One question: what is FileReader? This: https://developer.mozilla.org/en-US/docs/Web/API/FileReader? If it is a third party library can you send me a link? Desole web doesn't have forEach, but it seems it has a conflict for something else in that library. Thanks