initHeader

frontend/src/components/ErrorMessage/500.vue

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+<template>
+  <div class="not-container">
+    <img src="@/assets/images/500.png" class="not-img" alt="500" />
+    <div class="not-detail">
+      <h2>500</h2>
+      <h4>抱歉，您的网络不见了~🤦‍♂️🤦‍♀️</h4>
+      <el-button type="primary" @click="router.back"> 返回上一页 </el-button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts" name="500">
+import { useRouter } from "vue-router";
+const router = useRouter();
+</script>
+
+<style scoped lang="scss">
+@import "./index.scss";
+</style>