Mongoose aws4 wrong service account

[pedrooct]

HI!

I'm trying to connect to mongoatlas using ?authMechanism=MONGODB-AWS and with a service account isra defined.
However eks default service account is being used resulting is the following error.

MongoServerError: Could not find user "arn:aws:sts::XXXXX for 'db $external'

Any ideas?

Versions:
"aws4": "1.13.2"
"mongoose": "8.2.0",

Thank you