Forbidden error while accessing image which was stored

Hi all, 

I am getting 403 error while trying access the below file

https://local.community/cfs-file/__key/telligent-evolution-components-attachments/100-02-00-00-00-00-10-27/rocks_5F00_amp_5F00_waves_5F00_big_5F00_sur_5F00_2_5F00_563664.jpg 

I used below code to add & retrieve file

UploadedFile uploadedFile = MultipleUploadFileManager.GetUploadedFile(fileName, contextId);
if (uploadedFile == null)
{
throw new NotFoundException(CSExceptionType.FileNotFound, null, "", fileName);
}
attachment = new Attachment(fileName, uploadedFile.ContentType, uploadedFile.ContentLength)
{
ApplicationId = ApplicationId,
ApplicationType = (ApplicationType)100,
ContentId = Id,
IsRemote = false,
DateCreated = DateTimeUtil.CurrentUtcTime
};
using (Stream inputStream = uploadedFile.InputStream)
{
attachmentService.Add(attachment, inputStream, true);
}

Services.Get<IAttachmentDataProvider>().PopulateAttachmentFromIDataRecord(dataReader);

Globals.FullPath(attachment.Url);

Kindly help me out in this