White space is required before the encoding pseudo attribute in the XML declaration.2023-12-03 18:53:16错误出现的位置: <?xml version="1.0"encoding="UTF-8"?> 正确方式： <?xml version="1.0" encoding="UTF-8"?> 错误原因：标签中的属相间需要用空格区分开上一篇：Leetcode 笔记 110 - Balanced Binary Tree下一篇：改造rm命令为mv