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src/components/HomeNav/HomeNavLeft.vue

@@ -108,7 +108,7 @@
         :default-active="$route.path">
         <template v-for="(item,index) in navList">
           <template v-if="item.GCode!='默认'">
-            <el-submenu :index="item.list[0].MenuUrl?item.list[0].MenuUrl:index">
+            <el-submenu :index="item.list&&item.list.length>0&&item.list[0].MenuUrl?item.list[0].MenuUrl:String(index)">
               <template slot="title">
                 <span>{{ item.GCode }}</span>
               </template>