Webhook event Error(onHangUp, onAnswer)

[webwizard116]

Hi, I tried to use webhook and onNewCall event works well.
But onHangUp and onAnswer events are not working.
Even it doesn't console any string.
I tried like this, could you please help me?

createWebhookModule(sipgateio)
.createServer({
port: port,
serverAddress: serverAsdress,
skipSignatureVerification: true
})
.then((webhookServer) => {
console.log("Webhook server connected");
webhookServer.onNewCall(async (newCallEvent) => {

        console.log(`New Call from ${newCallEvent.from} to ${newCallEvent.to}`);
    });

    webhookServer.onAnswer(async (answerEvent) => {
        console.log(`The call was anwered by ${answerEvent.user}`);
    });

    webhookServer.onHangUp(async (hangUpEvent) => {
        console.log("sdfsdfdsfsdfsdfdsfsdfsdfsdfsdfsdfsdf");
    });
    webhookServer.onData(async (dataEvent) => {
        console.log(`Data Event: `, dataEvent);
    });
}).catch((err) => console.error(err));