uni组件中的button点击为什么报Cannot read property '$options' of undefined？

Question

<template>
    <view class="">
        <u-empty mode="data" icon="http://cdn.uviewui.com/uview/empty/data.png">
            <view style="margin-top: 100rpx;">
                <u-button text="添加数据" icon="plus" @click="addInfo"></u-button>
            </view>
        </u-empty>
    </view>
</template>

<script>
    import {
        educationFields, 
    } from './index.js'
    export default {
        data() {

        },
        methods: {
            addInfo() {
                console.log(1)
            }
        }
    }
</script>

<style>
</style>