修复BOM编辑

src/views/modules/tech/product-add-or-update.vue

@@ -308,7 +308,7 @@ export default {
           }
 
           // 物料图纸
-          this.drawingList = data.data.proDrawings
+          this.drawingList = data.data.proDrawings || []
         }
       })
     },
@@ -401,6 +401,8 @@ export default {
               this.$message.error(data.msg)
             }
           })
+        } else {
+          this.$message.error('请检查输入参数')
         }
       })
     },