No credentials cache file found while validating credentials
to use or which addressing style to use for Amazon S3.
The distinction between credentials and non-credentials configuration is important because the lookup process is slightly different.
In the case of a domain-joined computer, the authenticating target is the domain controller.
The credentials used in authentication are digital documents that associate the user's identity to some form of proof of authenticity, such as a certificate, a password, or a PIN.
You can specify the following configuration values for configuring an IAM role in boto3.
settings are nested configuration values that require special formatting in the AWS configuration file.See the IAM Roles for Amazon EC2 guide for more information on how to set this up.