我正在尝试运行以下命令来删除Azure中未使用的网络安全组，但是该命令一直返回“subnets/default nanot be null或empty”？？

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let subnetParameters = {
            id: "/subscriptions/MysubscriptionId/resourceGroups/helloStorageResouceGrp/providers/Microsoft.Network/virtualNetworks/helloStorageResouceGrpvnet860/subnets/default",
            networkSecurityGroup: {
                id: "/subscriptions/MysubscriptionId/resourceGroups/helloStorageResouceGrp/providers/Microsoft.Network/networkSecurityGroups/babNewMachineForEncryption-nsg",
                name: null
            }
        }
        let resourceGroupName = 'helloStorageResouceGrp';
        let virtualNetworkName = 'helloStorageResouceGrpvnet860';
        let subnetName = 'default';
        let removeSecurityGroup = await NetworkManagement.subnets.createOrUpdate(resourceGroupName, virtualNetworkName, subnetName, subnetParameters)
        console.log('removeSecurityGroup: ', JSON.stringify(removeSecurityGroup));

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