#0  0x0000000000000000 in ?? ()
#1  0x00007ffff697439a in QDialogButtonBoxPrivate::createButton (this=this@entry=0x149bd00, sbutton=sbutton@entry=QDialogButtonBox::Ok, doLayout=doLayout@entry=false)
    at widgets/qdialogbuttonbox.cpp:411
#2  0x00007ffff6974738 in QDialogButtonBoxPrivate::createStandardButtons (this=this@entry=0x149bd00, buttons=..., buttons@entry=...) at widgets/qdialogbuttonbox.cpp:451
#3  0x00007ffff6974d3c in QDialogButtonBox::setStandardButtons (this=this@entry=0x149ba80, buttons=...) at widgets/qdialogbuttonbox.cpp:823
#4  0x00007ffff697539a in QDialogButtonBox::qt_metacall (this=0x149ba80, _c=QMetaObject::WriteProperty, _id=1, _a=0x7fffffffa430) at .moc/moc_qdialogbuttonbox.cpp:233
#5  0x00007ffff563b562 in QMetaProperty::write (this=this@entry=0x7fffffffa4c0, object=object@entry=0x149ba80, value=...) at kernel/qmetaobject.cpp:2926
#6  0x00007ffff566346f in QObject::setProperty (this=0x149ba80, name=0x149e5a8 "standardButtons", value=...) at kernel/qobject.cpp:3827
#7  0x00007ffff70e8761 in ?? () from /usr/lib/libQt5Designer.so.5
#8  0x00007ffff71dc94a in QAbstractFormBuilder::create(DomWidget*, QWidget*) () from /usr/lib/libQt5Designer.so.5