Zipline "might be a bug" error

Started getting the following error this morning during moonshot live trading, while getting prices from usstock-minute bundle using get_prices. Tried digging in, but seems like the issue is deep in the stack that I don't have access to. Any help is appreciated.

Here's my get_prices call:

from quantrocket import get_prices
prices = get_prices('usstock-minute', sids=['FIBBG000M75YR0', 'FIBBG00S90Q1M3'], start_date='2021-09-18')

Now generates the following error:

HTTPError: ('500 Server Error: Internal Server Error for url: http://houston/zipline/bundles/data/usstock-minute.csv?start_date=2021-09-18&data_frequency=minute&sids=FIBBG000M75YR0&sids=FIBBG00S90Q1M3&exclude_universes=big-gap-main-blacklist&fields=High&fields=Low&fields=Volume&fields=Close&fields=Open', {'status': 'error', 'msg': 'an unhandled exception occurred, please check flightlog for the traceback and notify support if the problem persists as this might be a bug', 'error': "Timestamp('2022-09-16 00:00:00+0000', tz='UTC')"})

Here's the full traceback I get.

2021-09-28 09:15:04 quantrocket.zipline: ERROR Traceback (most recent call last):
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG Starting new HTTP connection (1): houston:80
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/trading_calendars/utils/memoize.py", line 47, in __get__
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self._cache[instance]
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/weakref.py", line 394, in __getitem__
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self.data[ref(key)]
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR KeyError: <weakref at 0x7f57622e64f8; to 'BcolzMinuteBarReader' at 0x7f57623b69b0>
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR 
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR During handling of the above exception, another exception occurred:
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR 
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR Traceback (most recent call last):
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/index.pyx", line 449, in pandas._libs.index.DatetimeEngine.get_loc
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/hashtable_class_helper.pxi", line 811, in pandas._libs.hashtable.Int64HashTable.get_item
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/hashtable_class_helper.pxi", line 817, in pandas._libs.hashtable.Int64HashTable.get_item
2021-09-28 09:15:04 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR KeyError: 1663286400000000000
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR 
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR During handling of the above exception, another exception occurred:
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR 
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR Traceback (most recent call last):
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_wsgi_py", line 41, in app
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1994, in __call__
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self.wsgi_app(environ, start_response)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1985, in wsgi_app
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     response = self.handle_exception(e)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask_restful/__init__.py", line 271, in error_router
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return original_handler(e)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1540, in handle_exception
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     reraise(exc_type, exc_value, tb)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/_compat.py", line 32, in reraise
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     raise value.with_traceback(tb)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     response = self.full_dispatch_request()
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     rv = self.handle_user_exception(e)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask_restful/__init__.py", line 271, in error_router
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return original_handler(e)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     reraise(exc_type, exc_value, tb)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/_compat.py", line 32, in reraise
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     raise value.with_traceback(tb)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     rv = self.dispatch_request()
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self.view_functions[rule.endpoint](**req.view_args)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask_restful/__init__.py", line 477, in wrapper
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     resp = resource(*args, **kwargs)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask/views.py", line 84, in view
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self.dispatch_request(*args, **kwargs)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/flask_restful/__init__.py", line 587, in dispatch_request
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     resp = meth(*args, **kwargs)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/webargs/core.py", line 441, in wrapper
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return func(*args, **kwargs)
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_app_py", line 619, in get
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_qrzipline_bundles_query_py", line 141, in get_history_to_file
2021-09-28 09:15:05 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_qrzipline_bundles_query_py", line 173, in get_history
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_qrzipline_bundles_query_py", line 354, in validate
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "sym://qrocket_qrzipline_bundles_query_py", line 117, in validate_dates
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/trading_calendars/utils/memoize.py", line 49, in __get__
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     self._cache[instance] = val = self._get(instance)
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/zipline/data/minute_bars.py", line 989, in last_available_dt
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     _, close = self.calendar.open_and_close_for_session(self._end_session)
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/trading_calendars/trading_calendar.py", line 848, in open_and_close_for_session
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     self.session_open(session_label),
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/trading_calendars/trading_calendar.py", line 875, in session_open
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     'market_open'
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/pandas/core/indexing.py", line 1869, in __getitem__
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return self.obj._get_value(*key, takeable=self._takeable)
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "/opt/conda/lib/python3.6/site-packages/pandas/core/frame.py", line 1985, in _get_value
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR Traceback (most recent call last):
2021-09-28 09:15:04 quantrocket.zipline: ERROR     return engine.get_value(series._values, index)
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "sym://qrocket_app_py", line 121, in post
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "/codeload/trade/execution.py", line 501, in trade_strategy
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/index.pyx", line 83, in pandas._libs.index.IndexEngine.get_value
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR     trade(code, review_date=review_date, output='csv', filepath_or_buffer=orders, **kwargs)
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "/opt/conda/lib/python3.8/site-packages/quantrocket/moonshot.py", line 606, in trade
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/index.pyx", line 91, in pandas._libs.index.IndexEngine.get_value
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR     houston.raise_for_status_with_json(response)
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "/opt/conda/lib/python3.8/site-packages/quantrocket/houston.py", line 206, in raise_for_status_with_json
2021-09-28 09:15:04 quantrocket.zipline: ERROR   File "pandas/_libs/index.pyx", line 451, in pandas._libs.index.DatetimeEngine.get_loc
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR     raise e
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "/opt/conda/lib/python3.8/site-packages/quantrocket/houston.py", line 198, in raise_for_status_with_json
2021-09-28 09:15:04 quantrocket.zipline: ERROR KeyError: Timestamp('2022-09-16 00:00:00+0000', tz='UTC')
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR     response.raise_for_status()
2021-09-28 09:15:06 quantrocket.satellite: ERROR   File "/opt/conda/lib/python3.8/site-packages/requests/models.py", line 941, in raise_for_status
2021-09-28 09:15:04 quantrocket.zipline: ERROR 
2021-09-28 09:15:06 urllib3.connectionpool: DEBUG http://houston:80 "GET /version HTTP/1.1" 200 20
2021-09-28 09:15:06 quantrocket.satellite: ERROR     raise HTTPError(http_error_msg, response=self)
2021-09-28 09:15:06 quantrocket.satellite: ERROR requests.exceptions.HTTPError: ('500 Server Error: INTERNAL SERVER ERROR for url: http://houston/moonshot/orders.csv?strategies=big-gap-main&review_date=2021-09-28+09%3A13%3A32', {'status': 'error', 'msg': '(\'500 Server Error: Internal Server Error for url: http://houston/zipline/bundles/data/usstock-minute.csv?start_date=2021-09-18&data_frequency=minute&sids=FIBBG000M75YR0&sids=FIBBG00S90Q1M3&exclude_universes=big-gap-main-blacklist&fields=Open&fields=Low&fields=Volume&fields=Close&fields=High\', {\'status\': \'error\', \'msg\': \'an unhandled exception occurred, please check flightlog for the traceback and notify support if the problem persists as this might be a bug\', \'error\': "Timestamp(\'2022-09-16 00:00:00+0000\', tz=\'UTC\')"})'})
2021-09-28 09:15:07 quantrocket.countdown: ERROR Error running /opt/conda/bin/quantrocket satellite exec codeload.trade.trade_strategy --params code:big-gap-main review_date:2021-09-28 09:13:32 trade_orders:True
2021-09-28 09:15:07 quantrocket.countdown: ERROR msg: 'error running function: (''500 Server Error: INTERNAL SERVER ERROR for url:
2021-09-28 09:15:07 quantrocket.countdown: ERROR   http://houston/moonshot/orders.csv?strategies=big-gap-main&review_date=2021-09-28+09%3A13%3A32'',
2021-09-28 09:15:07 quantrocket.countdown: ERROR   {''status'': ''error'', ''msg'': ''(\''500 Server Error: Internal Server Error for
2021-09-28 09:15:07 quantrocket.countdown: ERROR   url: http://houston/zipline/bundles/data/usstock-minute.csv?start_date=2021-09-18&data_frequency=minute&sids=FIBBG000M75YR0&sids=FIBBG00S90Q1M3&exclude_universes=big-gap-main-blacklist&fields=Open&fields=Low&fields=Volume&fields=Close&fields=High\'',
2021-09-28 09:15:07 quantrocket.countdown: ERROR   {\''status\'': \''error\'', \''msg\'': \''an unhandled exception occurred, please
2021-09-28 09:15:07 quantrocket.countdown: ERROR   check flightlog for the traceback and notify support if the problem persists as
2021-09-28 09:15:07 quantrocket.countdown: ERROR   this might be a bug\'', \''error\'': "Timestamp(\''2022-09-16 00:00:00+0000\'',
2021-09-28 09:15:07 quantrocket.countdown: ERROR   tz=\''UTC\'')"})''})'
2021-09-28 09:15:07 quantrocket.countdown: ERROR status: error

FYI, this issue was resolved by restarting the Zipline docker service. Thanks for @bjsun for posting his solution here: Zipline backtests fail with timestamp key error