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hmm.. well just grasping at straws now, but I tried creating the

~/.aws/credentials

and

~/.aws/config

files and that works.. Not sure why it doesn't read from the env vars if the credential files aren't there

Sounds like you are using the s3 backend? This error indicates that the region couldn’t be found - I believe you could include this as

?region=us-west-2

in the s3 login url if your environment isn’t setup such that this can be found automatically.

I should've updated this thread with what was happening. It ended up being a local circleci CLI issue. It was not picking up my environment variables. I'm not sure if I was passing them in wrong or what, but I tried running it in a real CircleCI integration environment and it was able to find my aws credentials. Thanks for respond to my question, though!