Diacritics strings result in errors coming from the MariaDB Client

[robertbindar]

[a97410985]

some discovery

In beginning, I can't reproduce this error. Like the image below

I think this error is about the character set, so I query my database. (show below)

Like the above image, tests the database's default character set is utf8mb4, which cover all character(such as Chinese, Diacritics...etc)
And when I create a database that is a Latin character set. Would have 「ERROR 1366」 error like below.

some ideas

when occurring 「ERROR 1366」would show a more friendly message for directing the user to change their database character set to be utf8mb4 or we set all database to be utf8mb4 by default