今天工作时碰到这个报错，排查了一下，发现是.map不能映射null，
表格数据在刚进入页面没有选择参数时接口传过来的空值
兼容一下即可
//数组可能为空，无法map，加上 || [] 兼容即可 this.tableData = (res.data.data || []).map
Uncaught (in promise) TypeError: Cannot read properties of null (reading 'map')报错
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