帮我解决一下关于封装的问题

我用ALLEGRO手工绘制了一个封装保存时出现如下错误,帮我看一下问题出现在那里?

 CREATE SYMBOL BEGUN.
 
 Symbol is missing a refdes.
 Symbol is missing a refdes.
 CREATE SYMBOL ABORTED.
 Create Symbol Aborted, error = Symbol is missing a refdes.

 Symbol is missing a refdes.
 Symbol is missing a refdes.
错误信息已经很明确了啊

你没有在封装里放一个refdes