MySQL: Unable to set the client character set to utf8 (""). Using 'utf8' instead.

Hello,

I recently upgraded my app Qt version from 5.15.2 to 6.2. I can connect to any MySQL database successfully using Qt MySQL Driver but I always get this message while doing so: 

MySQL: Unable to set the client character set to utf8 (""). Using 'utf8' instead.

I didn't specify any character set in the connection options:

db = QSqlDatabase::addDatabase("QMYSQL", "DbOp");

db.setHostName("hostname.com");

db.setUserName("developer");

db.setPassword("password");

db.setDatabaseName("database_name");

I didn't have this message with Qt 5.15.2. I reported the issue to the driver compiler and he pointed to Qt.