看我原先的代码：
运行出现的错误
解决办法
修改完成之后问题就解决了嘻嘻嘻......
因为我在main.js是用如下的方式引入axios的
所以在vue页面使用的时候就用 $axios 来调用
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Vue（踩坑）vue.esm.js?efeb:628 [Vue warn]: Error in render: "TypeError: Cannot read property 'length' of undefined" found in
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at src/components/ShopList/ShopList.vue at s">
vuex(报错）_vue.esm.js?efeb:628 [Vue warn]: Error in render: "TypeError: Cannot read property 'length' of undefined" found in ---> at src/components/ShopList/ShopList.vue at s
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vue vue.esm.js?efeb:628 [Vue warn]: v-bind without argument expects an Object or Array value
vue.esm.js?efeb:591 [Vue warn]: Invalid prop: type check failed for prop "data". Expected Array, got String.
解决：vue.esm.js?efeb:628 [Vue warn]: Do not use built-in or reserved HTML elements as component id: heade
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