Upgrade error from 3.1.2.1 to 3.3.0-6 / A database error has occurred: SQLSTATE[HY000]: General error: 1366 Incorrect string value - Software Support - PKP Community Forum
java.sql.SQLException: Incorrect string value: '\xF0\x9F\x96\xA4\xE2\x9C…' for column – Pinter Computing
Have an error : Incorrect string value when input in other languages - Server Side Swift with Vapor - Kodeco Forums