https://doc.qt.io/qt-6/qttexttospeech-index.html#licenses-and-attributions Contains the following ending:

"Furthermore, Qt TextToSpeech in Qt 6.9.1 may contain third party modules under the following permissive licenses:"

The module does not contain any 3rd party components. As such it is correct, that the list is empty. However, we have received feedback that in case of no dependencies, we should not show that text at all. Otherwise it might feel like a bug and there is missing documentation.