Custom incoming webhook URL not working

microsoftTeams.settings.getSettings(function (settings) {
            // We get the Webhook URL in settings.webhookUrl which needs to be saved.
            $.ajax({
                url: '/Home/Save',
                type: 'post',
                contentType: 'application/json',
                data: JSON.stringify({
                    webhookUrl: settings.webhookUrl,
                    eventType: eventType
                }),
                success: function (data, textStatus, jQxhr) {
                    console.log('webhook created successfully.');
                },
                error: function (jqXhr, textStatus, errorThrown) {
                    console.log('error', errorThrown);
                }
            });
        });
        saveEvent.notifySuccess();