--write-aws-credential causing JSON decoding error in various tools

[minhio]

okta-aws-cli version 2.0.0-beta.6

getting errors from various tools (granted cli and aws cli) when using credential process, ONLY when --write-aws-credentials flag is set

example aws config file (app id, client id, org domain are set in env vars)

[profile default]
region = us-east-1
credential_process = okta-aws-cli web --format process-credentials --write-aws-credentials --aws-iam-idp arn:aws:iam::1234567890:saml-provider/OKTA --aws-iam-role arn:aws:iam::1234567890:role/Developer

executing aws cli command aws s3 ls will produce this error Expecting value: line 1 column 1 (char 0)

however, the ~/.aws/credentials file is updated accordingly so subsequent aws commands will work

here's the debug from aws cli

2024-02-02 09:36:14,550 - MainThread - awscli.clidriver - DEBUG - Exception caught in main()
Traceback (most recent call last):
  File "awscli\clidriver.py", line 460, in main
  File "awscli\customizations\commands.py", line 151, in __call__
  File "awscli\customizations\commands.py", line 205, in __call__
  File "awscli\customizations\s3\subcommands.py", line 495, in _run_main
  File "awscli\customizations\s3\subcommands.py", line 481, in _run_main
  File "awscli\customizations\s3\factory.py", line 53, in create_client
  File "awscli\botocore\session.py", line 839, in create_client
  File "awscli\botocore\session.py", line 445, in get_credentials
  File "awscli\botocore\credentials.py", line 1974, in load_credentials
  File "awscli\botocore\credentials.py", line 950, in load
  File "awscli\botocore\credentials.py", line 977, in _retrieve_credentials_using
  File "json\__init__.py", line 346, in loads
  File "json\decoder.py", line 337, in decode
  File "json\decoder.py", line 355, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

similarly, the granted cli produce this error when executing assume default

[✘] process provider error: parse failed of process output: , error: unexpected end of JSON input

removing the --write-aws-credential flag and the error goes away