制作异型焊盘的问题

我在做一个异型焊盘时，形状见附件。

先创建一个shape symbol，

当时在保存的时候，出错信息如下：

 CREATE SYMBOL BEGUN.
 
 Shape symbol cannot have a void in a shape. 24901620
SHAPE        @24901620
1)  mask              = 40
2)  class             = 6 = ETCH
3)  subclass          = 0 = TOP
4)  branch_link       = 24901600
5)  branch_ptr        = 24901600
6)  symbol_ins_link   = 0
7)  first_connection       = 0
8)  first_void        = 24901684
9)  first_outline_seg = 24901100
10) first_patch_set   = 0
11) shape_fill        = 1
12) first_text        = 0
13) first_relation    = 0
14) extents.min       = (-20000, -20000)
15) extents.max       = (110000, 35000)

 Shape symbol cannot have a void in a shape.
 CREATE SYMBOL ABORTED.
 Create Symbol Aborted, error = Shape symbol cannot have a void in a shape.

请问各位，什么原因?

Shape symbol cannot have a void in a shape

打开boundary看一看，哪里的shape被你void了?