修改

src/layout/components/Sidebar/index.vue

@@ -12,7 +12,7 @@
         :collapse-transition="false"
         mode="vertical"
       >
-        <sidebar-item v-for="route in permission_routes" :key="route.path" :item="route" :base-path="route.path" />
+        <sidebar-item v-for="(route, index) in permission_routes" :key="index" :item="route" :base-path="route.path" />
       </el-menu>
     </el-scrollbar>
   </div>