报错：Cannot read property 'avator' of undefined

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npm run dev 打开页面后加载不出来，控制台显示js 报错：Cannot read property 'avator' of undefined
at eval (user.js?7fa2:68)

代码在 store/module/user.js 文件里：
```
// 获取用户相关信息
getUserInfo ({ state, commit }) {
return new Promise((resolve, reject) => {
getUserInfo(state.token).then(res => {
const data = res.data
commit('setAvator', data.avator)
commit('setUserName', data.user_name)
commit('setUserId', data.user_id)
commit('setAccess', data.access)
resolve(data)
}).catch(err => {
reject(err)
})
})
}
```

data 返回是 undefined，默认请求的数据源是哪里的？是不是要改？

Start by running npm run dev and inspect store/module/user.js, especially getUserInfo and the request that supplies res.data. Trace the default data source and verify why it returns undefined before the avatar access. Done means the page loads without the reported JavaScript error and the user data fields are available.

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