Updated Pre-signed URL method

FileUploadService.cs

public async Task<string> GetS3ObjectPresignedUrl(IFormFile file)
{
    try
    {
        var key = Path.GetRandomFileName() + Guid.NewGuid().ToString() + Path.GetExtension(file.FileName).ToLowerInvariant();                
        if (await UploadFileToS3(file, key))
        {
            var getUrlRequest = new GetPreSignedUrlRequest
            {
                BucketName = BucketName,
                Key = key,
                Expires = DateTime.UtcNow.AddHours(ExpirationDurationInHours),
            };

            // New Change 
            await _notificationService.SendUploadNotification("hello");
            return _client.GetPreSignedURL(getUrlRequest);
        }
        return null;
    }
    catch (Exception)
    {
        throw;
    }
}