can't use lock screen

[Tlntin]

I compiled cutefishos in ubuntu 21.10,everything is ok. but i can't lock screen.
when I run command in shell, and click lock sceen, it's seems not work.
this is logs:

/usr/local/bin/cutefish-shutdown
qt.gui.icc: fromIccProfile: failed minimal tag size sanity
qt.gui.icc: fromIccProfile: failed minimal tag size sanity
qt.gui.icc: fromIccProfile: failed minimal tag size sanity
qt.qpa.xcb: QXcbConnection: XCB error: 5 (BadAtom), sequence: 458, resource id: 0, major code: 20 (GetProperty), minor code: 0

[Tlntin]

when I compiled screenlocker，everything is ok.
https://github.com/cutefishos/screenlocker