updata:

projects/textbook/src/modules/nav-author/components/attachment/attachment.component.ts

@@ -171,7 +171,7 @@ export class AttachmentComponent implements OnInit {
     }
     if(!check){
       this.msg.create('warning','请返回选择适用课程性质')
-      return
+      return true
     }
 
     let eduColumn = eduTextBook.EduTextbook.fields