"segmentation fault" is caused by connecting to a slot after disconnecting a nonexistent connection

from PySide6.QtCore import QCoreApplication, QObject, QTimer, Signal, Slot


class Foo(QObject):
    foo_signal = Signal()

    def bar(self):
        pass

    @Slot()
    def baz(self):
        pass

    def test_without_slot(self):
        try:
            self.foo_signal.disconnect(self.bar)
        except RuntimeError as e:
            print(e)
        self.foo_signal.connect(self.bar)
        print("test_without_slot: after connect")

    def test_with_slot(self):
        try:
            self.foo_signal.disconnect(self.baz)
        except RuntimeError as e:
            print(e)
        self.foo_signal.connect(self.baz)
        print("test_with_slot: after connect")


if __name__ == "__main__":
    app = QCoreApplication()

    foo = Foo()

    QTimer.singleShot(1000, foo.test_without_slot)

    QTimer.singleShot(2000, foo.test_with_slot)

    QTimer.singleShot(5000, app.quit)

    app.exec()

Failed to disconnect signal foo_signal().
test_without_slot: after connect
Failed to disconnect signal foo_signal().
[1]    89466 segmentation fault (core dumped)  python main.py