修改

src/views/system/goodsCategory/index.vue

@@ -15,6 +15,8 @@
         </div> -->
         <div class="head-container" style="height: 580px; width: 100%">
           <el-tree
+            node-key="id"
+            :default-expanded-keys="[0]"
             class="flow-tree"
             :data="deptOptions"
             :props="defaultProps"