error when displaying QML on Qquickwidget

[dziko147]

Hello ,
I get this error when i try to display my second Qml file on Qquickwidget

" Object 0x55a7e487b1d0 destroyed while one of its QML signal handlers is in progress.
Most likely the object was deleted synchronously (use QObject::deleteLater() instead), or the application is running a nested event loop.
This behavior is NOT supported!
qrc:/qml/automotive.qml:94: function() { [native code] } "

Does any one know how to solve this please .

thank you <3

[dziko147]

this error is solved by using multithreads Signal & slots .
For example :
connect(workerA, SIGNAL(printMessage(QString)), this, SLOT(printMessage(QString)), Qt::QueuedConnection);