The Ukrainian Cryptocurrency exchange Kuna on its official Facebook page reported an erroneous charging of bitcoins to the accounts of some users because of the failure of the bitcoin purse. Some users managed to use the formed "hole" and withdrew the funds. All operations on the exchange were stopped until the moment when the programmers fix the bug. According to preliminary data, this can last until the end of the day. At the same time, the administration of the exchange said that the rest of the users' funds were not harmed and are in complete safety.