增加用于调试的代码："Uncaught TypeError: Cannot read property 'weight' of undefined"。已注释。
增加用于调试的代码："Uncaught TypeError: Cannot read property 'weight' of undefined"。已注释。

Signed-off-by: Jerin Lee <af74fa2ce35b69390cf05d133cd2762ecd43713d@qq.com>

13f/lore-graph,13f/lore-graph