udpate

src/view/error-page/back-btn-group.vue

@@ -1,7 +1,7 @@
 <template>
   <div>
     <Button size="large" type="text" @click="backHome">返回首页</Button>
-    <Button size="large" type="text">返回上一页({{ second }}s)</Button>
+    <Button size="large" type="text" @click="backPrev">返回上一页({{ second }}s)</Button>
   </div>
 </template>
 

src/view/error-page/error-content.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="error-page">
     <div class="content-con">
-      <img :src="src" alt="404">
+      <img :src="src" :alt="code">
       <div class="text-con">
         <h4>{{ code }}</h4>
         <h5>{{ desc }}</h5>