@@ -1,7 +1,7 @@
<template>
<div class="container">
<el-row :gutter="20" class="normal-margin">
- <el-col :span="6" v-for="o in 4">
+ <el-col :span="6" v-for="o in 4" :key="o">
<div class="normal-card"></div>
</el-col>
</el-row>
