修复:避免错误

src/Add-on/twoD2threeD/RectConvertToBr.ts

@@ -343,6 +343,8 @@ export class RectConvertToBoard implements Command
         for (let i = 0; i < cabGroup.length; i++)
         {
             let group = cabGroup[i];
+            if (group.length === 0) continue;
+
             //改柜名
             if (storeOption.iscabinetName)
             {