element-ui升级报错

element-ui升级报错

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[Element Migrating][ElCascader][Attribute]: expand-trigger is removed, use props.expandTrigger instead.

Cascader这个组件元素的属性expand-trigger已经废弃，拿props.expandTrigger代替使用

Cascader 级联选择器地址
https://element.eleme.cn/2.15/#/zh-CN/component/cascader

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