ts_client.stream_bars_start_date > BAD REQUEST - STATUS CODE: 401

[dkhokhlov]

I am trying to get 1min bars since 06-10-2021:

res = ts_client.stream_bars_start_date(
symbol='AMZN',
interval=1,
unit='Minute',
start_date='06-10-2021',
session='Default'
)

generates:

BAD REQUEST - STATUS CODE: 401
RESPONSE URL: https://sim-api.tradestation.com/v2/stream/barchart/AMZN/1/Minute/06-14-2021?sessionTemplate=Default
RESPONSE HEADERS: {'Date': 'Tue, 15 Jun 2021 07:29:32 GMT', 'Content-Type': 'application/json; charset=utf-8', 'Transfer-Encoding': 'chunked', 'Connection': 'keep-alive', 'Cache-Control': 'no-store, no-cache, max-age=0', 'Expires': 'Thu, 01 Jan 1970 00:00:00 UTC', 'Pragma': 'no-cache', 'Strict-Transport-Security': 'max-age=31536000; includeSubDomains', 'X-Accel-Expires': '0', 'X-Way-Backend': 'webapi_bars_new'}