public async Task<ActionResult> EditPhoto(HttpPostedFileBase profilePhotoUser, string usernamePhoto)
        {
            if (profilePhotoUser != null)
            {
                if (profilePhotoUser.ContentLength > 0)
                {
                    GridFSBucketOptions bucketOptions = new GridFSBucketOptions() { BucketName = "ProfileImages" };
                    var fs = new GridFSBucket(KonradRequirementsDatabase, bucketOptions);

                    // getting filename
                    string fileName = Path.GetFileName(profilePhotoUser.FileName);

                    //get the bytes from the content stream of the file
                    byte[] pictureBytes = new byte[profilePhotoUser.ContentLength];
                    using (BinaryReader theReader = new BinaryReader(profilePhotoUser.InputStream))
                    {
                        pictureBytes = theReader.ReadBytes(profilePhotoUser.ContentLength);
                    }
                    
                    // Saving picture
                    var objectId = await fs.UploadFromBytesAsync(fileName, pictureBytes);

                    var filter = Builders<BsonDocument>.Filter.Eq("Username", usernamePhoto);

                    var update = Builders<BsonDocument>.Update
                    .Set("ProfileImageName", fileName);

                    var result = await usersCollection.UpdateOneAsync(filter, update);

                    return RedirectToAction("MyProfile", new { ReLogin = true, result = result });
                }
            }
            return null;
        }