Fetching XML files from Azure Storage Explorer sometime fails

var xmlFileByteArray = _azureHelper.GetFileBytes(fileName, sourceDirectory);

if (xmlFileByteArray is null)
{
    return;
}

var reader = new StreamReader(new MemoryStream(xmlFileByteArray));
var xmlDocument = new XmlDocument();
xmlDocument.Load(reader);

System.Xml.XmlException: 'Data at the root level is invalid. Line 1, position 1.'