StartDocumentTextDetectionRequest : Request has invalid parameters

I am attempting to StartDocumentTextDetectionRequest but am getting the error of "Exception: Request has invalid parameters, Document: 2019/1/2/Document Name.pdf". Below is the code and the result. Any thoughts on what I am doing wrong? I am getting the correct file with path in the output while only providing root bucket and file name. I also have tried multiple variations of bucket, file name and path.

using (AmazonTextractClient client = new AmazonTextractClient(RegionEndpoint.USEast1))
{
    var bucket = doc.Bucket;
    var name = Path.GetFileName(doc.Path);
    
    context.Logger.LogLine($"Bucket: {bucket}");
    context.Logger.LogLine($"Name: {name}");
    
    StartDocumentTextDetectionRequest request = new StartDocumentTextDetectionRequest
    {
        DocumentLocation = new DocumentLocation
        {
            S3Object = new S3Object
            {
                Bucket = bucket,
                Name = name
            }
        },
        NotificationChannel = new NotificationChannel
        { 
            SNSTopicArn = "arn:aws:sns:us-east-1:RemovedForPublicPost"
        }
    };
    StartDocumentTextDetectionResponse response = await client.StartDocumentTextDetectionAsync(request);
    if ((int)response.HttpStatusCode < 200 || (int)response.HttpStatusCode > 299)
        throw new Exception($"Failed to Queue Text Detection: {response.JobId}, with status: {response.HttpStatusCode.ToString()}");
} 

Bucket: companyName.docs 
Name: Document Name.pdf
Exception: Request has invalid parameters, Document: 2019/1/2/Document Name.pdf