优化 warning提示

src/components/Aside.vue

@@ -7,7 +7,7 @@
     active-text-color="#ffd04b"
     :router="true"
   >
-    <el-sub-menu v-for="(item, index) in menu" :key="item" :index="index">
+    <el-sub-menu v-for="(item, index) in menu" :key="item" :index="`${index}`">
       <template v-slot:title>
         <i :class="item.icon"></i>
         <span>{{ item.title }}</span>

src/views/voyage/voyageList.vue

@@ -257,7 +257,7 @@ export default {
     let currentPage = ref(1);
     let term = ref();
     let tableData = ref();
-    let total = ref();
+    let total = ref(0);
     let status = ref(0);
     async function getVoyageList() {
       tableData.value = [];