Invalid prop: type check failed for prop "defaultExpandAll". Expected Boolean, got String with value "true".-526互联

vue中使用element-ui 报错如下，defaultExpandAll 关键词页面也搜不到

[Vue warn]: Invalid prop: type check failed for prop "defaultExpandAll". Expected Boolean, got String with value "true".
found in
---> <ElTable> at packages/table/src/table.vue

是转译后报错了的。defaultExpandAll 对应到 default-expand-all 来排查

<el-table :data="tableData" :default-expand-all="true">
  <!--表格列定义-->
</el-table>

在 default-expand-all 前面加上":" ,否则true当作字符串来解译了！

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