It is not an error, it actually informs your latin1 charset changed to utf8. If you are having any issues due to this and want to convert completely to utf8. The below-mentioned command may help. mysql> ALTER DATABASE databasename CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; mysql> ALTER TABLE tablename CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;