The plugin org.mitk.gui.qt.igttracking reports an error

[lulu2019]

In the file QmitkMITKIGTTrackingToolboxView.cpp of the org.mitk.gui.qt.igttracking plugin, the line
connect(m_Controls->m_VolumeSelectionBox, SIGNAL(currentIndexChanged(QString)), this, SLOT(OnTrackingVolumeChanged(QString)));
causes an error, showing:
QObject::connect: No such signal QComboBox::currentIndexChanged(QString)
QObject::connect: (sender name: 'm_VolumeSelectionBox')
This is because the signal has been removed in Qt 6.8, preventing the slot function from being executed.