update

@@ -95,11 +95,11 @@ class CosService
                 'Key' => $key,
                 'Body' => fopen($file_url, 'r'),
             ]);
+            return $key;
         }catch (\Exception $e){
             LogUtils::error('uploadRemote error', $e->getMessage());
+            return '';
         }
-
-        return $key;
     }
 
 }