using Serial commands is not supported by many commands.

Question

I use nrf5_SDK_for_Mesh_v3.2.0_src\examples\serial and board pca10040. 
 Supported commands. 
 In [2]: for i in range(0, 10): send(cmd.Echo("Hello: " + str(i))); time.sleep(1) 2019-12-30 10:19:11,041 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 0')}} 2019-12-30 10:19:12,045 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 1')}} 2019-12-30 10:19:13,042 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 2')}} 2019-12-30 10:19:14,042 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 3')}} 2019-12-30 10:19:15,042 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 4')}} 2019-12-30 10:19:16,043 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 5')}} 2019-12-30 10:19:17,044 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 6')}} 2019-12-30 10:19:18,044 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 7')}} 2019-12-30 10:19:19,046 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 8')}} 2019-12-30 10:19:20,046 - INFO - COM14: {event: DeviceEchoRsp, data: {'data': bytearray(b'Hello: 9')}} 
 In [8]: send(cmd.SerialVersionGet()) 
 In [9]: 2019-12-30 11:25:01,331 - INFO - COM14: SerialVersionGet: {'serial_ver': 10} 
 
 Not supported commands:

In [9]: send(cmd.FwInfoGet()) 
 In [10]: 2019-12-30 11:25:43,597 - ERROR - COM14: FwInfoGet: ERROR_CMD_UNKNOWN

In [13]: send(cmd.Enable()) 
 In [14]: 2019-12-30 11:52:31,726 - ERROR - COM14: None: ERROR_INVALID_STATE

python version 3.5.4 and aci_cmd.py

aci_cmd.py