Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "addMemberVisible"

found in

检查一下调用的elementui组件 是方法还是参数,

 

比如我这个,before-close是一个参数,直接:before-close=“方法名”,我写成了@before-close

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