boto3 client NoRegionError: You must specify a region error only sometimes

I have a boto3 client : boto3.client(‘kms’) But it happens on new machines, They open and close dynamically. if endpoint is None: if region_name is None: # Raise a more specific error message that will give # better guidance to the user what needs to happen. raise NoRegionError() Why is this happening? and why only … Read more