RuntimeWarning: CopyCppToPython(): SbkConverter::copyToPython is null for "PySide6.QtOpcUa.QOpcUaWriteResult".

RuntimeWarning: CopyCppToPython(): SbkConverter::copyToPython is null for "PySide6.QtOpcUa.QOpcUaWriteResult" occurs when the following signal is received:

PySide6.QtOpcUa.QOpcUaClient.writeNodeAttributesFinished(results, serviceResult)

The warning only occurs in PySide, and a similar signal and slot connection in Qt in c++ doesn't show that warning.
To reproduce the the issue, run the attached pyside project ( an edited version of Qt OPC UA Viewer Example project) and connect to an OPC UA server.
In mainwindow.py, the following lines have been added:

@Slot(list, QOpcUa.UaStatusCode)
 def onWriteNodeAttributesFinished(self, results, serviceResult)  # line 407

def onWriteNodeAttributes(self) # line 369 called in line 237

writeNodeAttributesFinished = Signal(list)  # line 71

self._opcua_client.writeNodeAttributesFinished.connect(self.onWriteNodeAttributesFinished)   #line 146

Steps to run an OPC UA server:

• Use Qt waterpump simulation server when listening on 43344

or

• git clone https://github.com/open62541/open62541
• Follow the steps mentioned in https://www.open62541.org/doc/1.0/installing.html to Install open62541 (ensure adding DUA_ENABLE_AMALGAMATION=ON flag when running cmake).
• Follow the steps in https://www.open62541.org/doc/1.0/tutorial_server_firststeps.html to build and run a simple server.

void QOpcUaClient::writeNodeAttributesFinished(QList<QOpcUaWriteResult> results, QOpcUa::UaStatusCode serviceResult)