Steam forcefully closed

[ilbarone92]

This is my main:

import avs
from audio_device import MplayerAudioDevice
def main():
a_token = "Atza|IwEBIBQ_JwCNQ2zLH08K-jsagEYl7tf148T1enxo4DPQxyhdnxjT1t87zo0ojTYV0zEyzmHH40gO30QzHwlke6HXyJN1tw0wd_nm..........."
r_token ="Atzr|IwEBINTwGVTOevV_A42stMH5g_RMCe6ksBj9uVjLhmShXDDquZF46B97LwMzvGpqBDnp.............."
client_id="amzn1.application-oa2-client.81d26b9bd4f94c669014c08134d46c9c"
secret="e744b77a8360977ba236f0ea83fe619edce............."
audio_device = MplayerAudioDevice()
a = avs.AVS('v20160207', a_token, r_token, client_id, secret, audio_device, audio_device,'NEAR_FIELD')
while True:
a.run()
# and other requests

if name == "main":
main()

Any clue why is not working? here is the error:

Traceback (most recent call last):
File "main.py", line 15, in
main()
File "main.py", line 9, in main
a = avs.AVS('v20160207', a_token, r_token, client_id, secret, audio_device, audio_device,'NEAR_FIELD')
File "/home/mta/Progetti/python-avs/python-avs/avs.py", line 82, in init
self._downchannel_stream_id, self._dc_resp = self._establish_downstream_directives_channel()
File "/home/mta/Progetti/python-avs/python-avs/avs.py", line 462, in _establish_downstream_directives_channel
return self._establish_downstream_directives_channel()
File "/home/mta/Progetti/python-avs/python-avs/avs.py", line 448, in _establish_downstream_directives_channel
ds_id, resp = self._make_request('GET', 'directives', close=False, raises=False)
File "/home/mta/Progetti/python-avs/python-avs/avs.py", line 240, in _make_request
response = self._connection.get_response(stream_id)
File "/home/mta/Progetti/python-avs/python-avs/src/hyper/hyper/http20/connection.py", line 347, in get_response
return HTTP20Response(stream.getheaders(), stream)
File "/home/mta/Progetti/python-avs/python-avs/src/hyper/hyper/http20/stream.py", line 230, in getheaders
self._recv_cb(stream_id=self.stream_id)
File "/home/mta/Progetti/python-avs/python-avs/src/hyper/hyper/http20/connection.py", line 805, in _recv_cb
self._get_stream(stream_id)
File "/home/mta/Progetti/python-avs/python-avs/src/hyper/hyper/http20/connection.py", line 324, in _get_stream
raise StreamResetError("Stream forcefully closed")
hyper.http20.exceptions.StreamResetError: Stream forcefully closed