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

                completion(photoAlbum, nil)
            }
            else {
                completion(nil, "\(error)")
            }
        }
    }

            })

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

    }
