When i say the hotword. I have some error code

[mrandrian]

It,s

DEBUG:google.auth.transport.requests:Making request: POST https://accounts.google.com/o/oauth2/token
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): accounts.google.com:443
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "POST /o/oauth2/token HTTP/1.1" 200 None
INFO:aiy.assistant.grpc:device_model_id: smartmirror2-78e9c-voice-kit
INFO:aiy.assistant.grpc:device_id: smartmirror2-78e9c-voice-kit-9e59fa9d-bdf9-4670-87b1-0dbff153ef0f
DEBUG:google.auth.transport.requests:Making request: POST https://accounts.google.com/o/oauth2/token
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): accounts.google.com:443
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "POST /o/oauth2/token HTTP/1.1" 200 None
INFO:aiy.assistant.grpc:Connecting to embeddedassistant.googleapis.com
/opt/aiy/projects-python/src/aiy/board.py:218: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(channel, GPIO.OUT)
INFO:root:Speak own hotword and speak
DEBUG:snowboy:detecting...
INFO:snowboy:detect started.
INFO:snowboy:Keyword 1 detected at time: 2019-09-27 09:00:17
INFO:snowboy:detect stopped.
DEBUG:snowboy:detect voice break
DEBUG:snowboy:finished.
INFO:root:Conversation started!
INFO:aiy.assistant.grpc:Recording started.
aplay: playback:2787: read error
INFO:aiy.assistant.grpc:Recording stopped.
Traceback (most recent call last):
File "./assistant_grpc_demo_snowboy.py", line 61, in
main()
File "./assistant_grpc_demo_snowboy.py", line 58, in main
assistant.conversation()
File "/opt/aiy/projects-python/src/aiy/assistant/grpc.py", line 190, in conversation
keep_talking = self._assist(recorder, wrapped_play, deadline)
File "/opt/aiy/projects-python/src/aiy/assistant/grpc.py", line 135, in _assist
for response in self._assistant.Assist(self._requests(recorder), deadline):
File "/usr/local/lib/python3.5/dist-packages/grpc/_channel.py", line 363, in next
return self._next()
File "/usr/local/lib/python3.5/dist-packages/grpc/_channel.py", line 357, in _next
raise self
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:
status = StatusCode.INVALID_ARGUMENT
details = "Invalid 'dialog_state_in': unsupported language_code."
debug_error_string = "{"created":"@1569549617.746231768","description":"Error received from peer","file":"src/core/lib/surface/call.cc","file_line":1099,"grpc_message":"Invalid 'dialog_state_in': unsupported language_code.","grpc_status":3}"