Some issue regarding aws session token

You've found a bug! Please, raise an issue attaching the following traceback
https://github.com/jorgebastida/awslogs/issues/new

Version: 0.14.0
Python: 3.9.1 (default, Feb 3 2021, 07:38:02)
[Clang 12.0.0 (clang-1200.0.32.29)]
boto3 version: 1.15.17
Platform: macOS-11.1-x86_64-i386-64bit
Args: ['/usr/local/bin/awslogs', 'get', '/aws/elasticbeanstalk/api2-pckt-party', '--watch', '--query=message']
Config: {'aws_access_key_id': 'SENSITIVE', 'aws_secret_access_key': 'SENSITIVE', 'aws_session_token': 'SENSITIVE', 'aws_profile': 'SENSITIVE', 'aws_region': None, 'aws_endpoint_url': None, 'log_group_name': '/aws/elasticbeanstalk/api2-pckt-party', 'log_stream_name': 'ALL', 'filter_pattern': None, 'watch': True, 'watch_interval': 1, 'output_group_enabled': True, 'output_stream_enabled': True, 'output_timestamp_enabled': False, 'output_ingestion_time_enabled': False, 'start': '5m', 'end': None, 'color': 'auto', 'query': 'message', 'func': 'list_logs'}

Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/awslogs/bin.py", line 179, in main
getattr(logs, options.func)()
File "/usr/local/lib/python3.9/site-packages/awslogs/core.py", line 229, in list_logs
consumer()
File "/usr/local/lib/python3.9/site-packages/awslogs/core.py", line 212, in consumer
parsed = json.loads(event['message'])
File "/usr/local/Cellar/python@3.9/3.9.1_8/Frameworks/Python.framework/Versions/3.9/lib/python3.9/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/usr/local/Cellar/python@3.9/3.9.1_8/Frameworks/Python.framework/Versions/3.9/lib/python3.9/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/local/Cellar/python@3.9/3.9.1_8/Frameworks/Python.framework/Versions/3.9/lib/python3.9/json/decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 1 column 15 (char 14)

~ awslogs get /aws/elasticbeanstalk/api2-pckt-party --watch --query=message

Start with awslogs/core.py, especially list_logs and consumer, then inspect the call from awslogs/bin.py:179. Reproduce the supplied awslogs command and examine the event message passed to json.loads; determine how the AWS session-token configuration relates to the malformed JSON error. Done means the cause and expected behavior are established and covered by an appropriate regression test.

Written by the indexing model from the issue text.