请检查你的导入和组件继承是否是正确的，注意大小写，单词拼写
import React, { Component } from 'react' 注意大小写和拼写
export default class xxx extends Component { 注意大小写和拼写
}
Super expression must either be null or a function, not undefined _inherits
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Super expression must either be null or a function, not undefined
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