Question accessing FileBlob

I am having a scheduled job that creates a file using IBlobFactory's CreateBlob method and eventually saving it in media documents using ContentRepository.Save() with SaveAction.Default.

Now I want to access this file to transfer it to datalake system. Below is the code I am trying : The line where am checking if the BinaryData is FileBlob errors out with object reference error. This works locally but errors out in DXC environment. Is there anything i am missing in the process to access the file or is this not the correct to get handle of the physical file to transfer it.

var file = this._contentLoader.Get<DataLakeDataFile>(this.DataFileContentReference);

if (file != null)
{

if (file.BinaryData is FileBlob fileBlob)
{
var filePath = fileBlob.FilePath;
DataLakeHelper.UploadFile(DataLakeDocumentReportETLSettings.DocumentReportBucketName, filePath);
DataLakeReportsHelper.BroadcastAndLogInformation(this._loggingService, this._statusBroadcast, "File has been transferred.");
}
else
{
throw new Exception($"Error: data file was retrieved but it can't be used as a FileBlob.");
}
}