"An internal error occurred while linting the URL" - is it due to cyrillic domain?

Question

Possible Duplicate:
Error sharing url in cyrillic

Facebook debugger sais: "An internal error occurred while linting the URL" for our url http://конкурсконцепций.рф (it is in cyryllic domain zone 'рф', its canonical url form is http://xn--e1agdbaatcfdnhn0a4cc.xn--p1ai/.

I'd like to know where the problem is? In cyryllic domain name or in site contents or smth else?

P.S. Link to debugger