mysql – How to display special characters in floating widgets?

I'm using the sqlJocky plugin in flutter, but when I've received data, the words are accompanied by special characters like ç, ~ and the text contains a decoding bug. an idea to convert to default code char?

var conn = wait MySqlConnection.connect (s);
Results result = wait (wait conn
.deStream ();
print (result);

Android log displaying mysql server data

mysql data