Online Document Editor demo returns Error 0: error when opening a document from computer

It was working fine earlier in the day. But now it throws this error no matter what.

Same problem here, and editor was working fine yesterday.
Now I have Error 0: error, what’s that?

@lillychiu @lillychiu
Thanks for providing us with the information.
We already trying to solve the issue and will inform you via this form once it will be resolved.

@lillychiu @lillychiu
We apologize that the service was temporarily unavailable.
Now the problem is fixed, everything works as expected.

Thank you for your cooperation