                 completion(photoAlbum, nil)
             }
             else {
-                completion(nil, "\(error)")
+                completion(nil, "\(String(describing: error))")
             }
         }
     }

            })

        }, failureBlock: { (error: Error?) in
            completion("Could not retrieve saved asset: \(error)")
        })

    }

        do {
            sourceData = try getDataFromURL(url)
        } catch {
            completion(nil, "\(String(describing: error))")
            return
        }

