Plasmashell error in log

Hello,

I have this error in log

kwin_x11[1409]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 7243, resource id: 54526017, major code: 18 (ChangeProperty), minor code: 0

Is this normal ?

Hello,

No, but did you search about it?

sorry are yes i searched

I have this

[Formats]
LANG=de_DE.UTF-8

[Translations]
LANGUAGE=de:en_US

Is

[Translations]
LANGUAGE=de

or

[Translations]
LANGUAGE=de_DE

correct ?

And many thanks for your Help

I delete all and
I have only this

[Formats]
LANG=de_DE.UTF-8

in the file /.config/plasma-localerc
Are no Solution