Qt 信号和槽异常： QObject::connect: No Such slot baseClassName

connect: No such slot QObject::replyFinished qobject__connect_ no such slot But when the connect statement is executed on this one I get … QObject::connect: No such slot QtVTKApp::setWidgetsEnabled() I read something corla slot QObject::connect: No such slot Akonadi::EntityOrderProxyModel::sourceDataChanged QObject::connect: No such

slot line connect to D-Bus server: NoServer No such > file or directory > Error: Can not contact kdeinit4