IAM Role credentials validation error

Failure
com.amazonaws.services.s3.model.AmazonS3Exception: The AWS Access Key Id you provided does not exist in our records. (Service: Amazon S3; Status Code: 403; Error Code: InvalidAccessKeyId; Request ID: 70D66789531A94B5; S3 Extended Request ID: l6QrwO1E2nkkzPNN3nmUcu09JjrJhjrxfiNWEiwks6wK0xuZZf0xJ0KT4myVOuQitemUiFniYP4=), S3 Extended Request ID: l6QrwO1E2nkkzPNN3nmUcu09JjrJhjrxfiNWEiwks6wK0xuZZf0xJ0KT4myVOuQitemUiFniYP4=
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1712)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1367)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1113)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:532)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:512)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4926)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4872)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4866)
at com.amazonaws.services.s3.AmazonS3Client.listBuckets(AmazonS3Client.java:979)
at com.amazonaws.services.s3.AmazonS3Client.listBuckets(AmazonS3Client.java:985)
at

The report provides only a Java AWS SDK stack trace ending at AmazonS3Client.listBuckets; no repository file, test, reproduction steps, or expected behavior is given. Start by locating the IAM role credential validation path in this plugin and reproducing the S3 InvalidAccessKeyId response. Clarify the intended behavior before defining a regression test and completion criteria.

Written by the indexing model from the issue text.