Error in nextTick: "TypeError: Cannot read properties of undefined (reading 'key')"

根据提供的引用内容，报错信息"Error in nextTick: "TypeError: Cannot read properties of undefined (reading 'key')"通常是由于代码中访问了未定义或空值的属性所致。在你提供的引用中，该报错发生在vue项目的el-table组件中。根据代码片段，可能的原因是在表格的某一行数据中，没有为key属性提供值或值为undefined。这可能导致在执行nextTick时出现错误，因为无法读取未定义的属性。要解决这个问题，你可以检查数据源，确保每一行数据都有一个有效的key属性。另外，你还可以在代码中添加一些条件判断，以确保在操作未定义或空值的属性之前进行检查。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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