vue报错解决：Error in v-on handler (Promise/async): “TypeError: Cannot read properties ofundefined

报错信息：[Vue warn]: Error in v-on handler (Promise/async): "TypeError: Cannot read properties of undefined (reading 'code ')” axios可以获取数据，控制台输出为undefined

报错代码：

错误原因：在①或者②的axios请求时，请求结果被catch捕获，所以axios可以获取到数据，但在catch中的res此时是未赋值的，所以控制台在③处调用res.xxx会出现报错
解决方法：只需要在catch中将axios获取到的数据赋值给res即可

修改后：

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