Character set ' Utf-8 ' is not a compiled Character set and are not specified

When I log into MySQL in terminal, I report the following error: MySQL prompts you to be in/usr/share/mysql/charsets/. The index.xml file joins the missing encoding set, but I checked to see that there was a set of encodings I needed in the Index.xml file.

This link gives me an answer that works for me.

Character set ' Utf-8 ' is not a compiled Character set and isn't
specified in '/usr/share/mysql/charsets/index.xml ' File

The Specifie file under the MySQL installation directory will be my.ini when the error of "Character set ' Utf-8 ' is not a compiled Character set and are not default-character-" appears Set=utf-8 change to Default-character-set=utf8 can be.
In a nutshell, change the "utf-8" to "UTF8".