Strange behavior chrome + firefox error via now.sh
Sometimes I get an error in the chrome console (sometimes there are no error and everything is fine).
![1](https://user-images.githubusercontent.com/34432884/34008269-c9c81e4c-e115-11e7-9842-bfcffb328e64.png)

In the fox does not work at all:
![2](https://user-images.githubusercontent.com/34432884/34008341-0dc8920c-e116-11e7-8c9e-9c742ebf6eda.png)

any suggestions?
