连接数据库时出错：'utf8鈥媘b4' is not a compiled character set

连接数据库时发生如下错误
mysql: Character set 'utf8鈥媘b4' is not a compiled character set and is not specified in the 'C:\Program Files\MySQL\MySQL Server 8.0\share\charsets\Index.xml' file
修改完D:\MySQL\mysql-8.0.27-winx64\share\charsets\Index.xml处的charset name="utf8"为charset name="utf8mb4"仍然在连接数据库时报错