Sieve filter failed path directory when created in RoundCube

Hello dear friends!
I created a sieve filter in RoundCube. In .sieve file I see:
This is a directiry, where filter must to move a message.
In log file i get error when filter is applied:
Mailbox doesn't exist: INBOX/&BBQEMAQ5BDQENgQ1BEEEQg- &BB0EPgQyBD4EQQRCBDg- &BDg- &BEIEPw-.
But in filesystem I realy have another dir name!

Is this a mistake or am I not understanding something?