Errors in my journalctl

Dear All,

i am verry happy with manjaro!

I have installed manjaro and started the journal. I get a lot of errors, but everything works fine.

  Nov 07 12:57:49 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 34993, resource id: 123732009, major code: 18 (ChangeProperty), minor code: 0            
    Nov 07 12:57:49 testuser systemd[1062]: app-org.kde.konsole-9edf5328ba2a46cd9460838c3e194755.scop
    e: Succeeded. 
    Nov 07 12:57:57 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 38152, resource id: 121634836, major code: 18 (ChangeProperty), minor code: 0            
    Nov 07 12:57:57 testuser systemd[1062]: app-org.kde.dolphin-134e871568174707b3a58e6c07138322.scop
    e: Succeeded. 
    Nov 07 12:57:57 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 38174, resource id: 46137512, major code: 18 (ChangeProperty), minor code: 0             
    Nov 07 12:58:00 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 39965, resource id: 46137518, major code: 18 (ChangeProperty), minor code: 0             
    Nov 07 12:58:00 testuser systemd[1062]: Started Dolphin - File Manager. 
    Nov 07 12:58:00 testuser kwin_x11[1145]: QPainter::begin: Paint device returned engine == 0, type
    : 3                                                                                              
    Nov 07 12:58:00 testuser dolphin[9135]: qt.qpa.xcb: QXcbConnection: XCB error: 5 (BadAtom), seque
    nce: 981, resource id: 0, major code: 20 (GetProperty), minor code: 0                            
    Nov 07 12:58:02 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 42978, resource id: 121634836, major code: 18 (ChangeProperty), minor code: 0            
    Nov 07 12:58:02 testuser systemd[1062]: app-org.kde.dolphin-20b55f5045b44c61b87c7dbb9d8297cd.scop
    e: Succeeded. 
    Nov 07 12:58:02 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 43033, resource id: 46137523, major code: 18 (ChangeProperty), minor code: 0             
    Nov 07 12:58:06 testuser systemd[1062]: Started System Settings - System Settings. 
    Nov 07 12:58:06 testuser systemsettings5[1590]: QCommandLineParser: argument list cannot be empty
    , it should contain at least the executable name                                                 
    Nov 07 12:58:06 testuser systemd[1062]: app-systemsettings-708de30a246f4165b8c24beada7f8a40.scope
    : Succeeded. 
    Nov 07 12:58:06 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 48391, resource id: 37749140, major code: 18 (ChangeProperty), minor code: 0             
    Nov 07 12:58:08 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 49394, resource id: 94371908, major code: 18 (ChangeProperty), minor code: 0             
    Nov 07 12:58:08 testuser systemd[1062]: app-\x2fusr\x2fbin\x2fsystemsettings5-dba50e9a36a84c44bcf
    607d05ffd85ac.scope: Succeeded. 
    Nov 07 12:58:24 testuser systemd[1062]: Started System Settings - System Settings. 
    Nov 07 12:58:24 testuser systemsettings5[9186]: Cyclic dependency detected between "file:///usr/l
    ib/qt/qml/org/kde/kirigami.2/styles/org.kde.desktop.plasma/Units.qml" and "file:///usr/lib/qt/qm
    l/org/kde/kirigami.2/styles/org.kde.desktop.plasma/Units.qml"                                    
    Nov 07 12:58:24 testuser systemsettings5[9186]: file:///usr/share/kpackage/genericqml/org.kde.sys
    temsettings.sidebar/contents/ui/SubCategoryPage.qml:142:9: QML Connections: Implicitly defined o
    nFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<argument
    s>) { ... }                                                                                      
    Nov 07 12:58:24 testuser systemsettings5[9186]: file:///usr/share/kpackage/genericqml/org.kde.sys
    temsettings.sidebar/contents/ui/SubCategoryPage.qml:132:9: QML Connections: Implicitly defined o
    nFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<argument
    s>) { ... }                                                                                      
    Nov 07 12:58:24 testuser systemsettings5[9186]: file:///usr/lib/qt/qml/org/kde/kirigami.2/private
    /RefreshableScrollView.qml:137:13: QML Connections: Implicitly defined onFoo properties in Conne
    ctions are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }              
    Nov 07 12:58:24 testuser systemsettings5[9186]: file:///usr/lib/qt/qml/org/kde/kirigami.2/private
    /RefreshableScrollView.qml:137:13: QML Connections: Implicitly defined onFoo properties in Conne
    ctions are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }              
    Nov 07 12:58:24 testuser systemsettings5[9186]: Cyclic dependency detected between "file:///usr/l
    ib/qt/qml/org/kde/kirigami.2/styles/org.kde.desktop.plasma/Units.qml" and "file:///usr/lib/qt/qm
    l/org/kde/kirigami.2/styles/org.kde.desktop.plasma/Units.qml"                                    
    Nov 07 12:58:24 testuser systemsettings5[9186]: QQmlEngine::setContextForObject(): Object already
     has a QQmlContext                                                                               
    Nov 07 12:58:24 testuser systemsettings5[9186]: qt.qpa.xcb: QXcbConnection: XCB error: 5 (BadAtom
    ), sequence: 755, resource id: 0, major code: 20 (GetProperty), minor code: 0                    
    Nov 07 12:58:24 testuser kwin_x11[1145]: QPainter::begin: Paint device returned engine == 0, type
    : 3                                                                                              
    Nov 07 12:58:27 testuser kwin_x11[1145]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), se
    quence: 62204, resource id: 94371920, major code: 18 (ChangeProperty), minor code: 0  

How can I fix this error myself?

Thank you in advance and kind regards!
trdk

If everything works you don’t need to worry about it.