Unable to configure backend for Oracle cloud in terraform version 1.6.4 getting error authorisation header malformed

Question

I am using credentials file for declaring backend in main.tf

access_key = "~/.aws/credentials"

secret_key                  = "~/.aws/credentials"

Getting error in GitHub Error: Failed to get existing workspaces: Unable to list objects in S3 bucket "***": operation error S3: ListObjectsV2, https response error StatusCode: 400, RequestID: arn-1:xxxx, HostID: , api error AuthorizationHeaderMalformed: Unable to parse Authorization header AWS4-HMAC-SHA256

Any help or lead is much appreciated

I tried with setup default profile and secret using echo at GitHub runner but facing this issue