MySQL/MariaDB – How to fix error "Unknown collation" and Migrate from MySQL to MariaDB database Paraclet Bonaventure Kizonzolo - Senior DBA 1 year ago MySQL/MariaDB – How to fix error "Unknown collation" and Migrate from MySQL to MariaDB database Migrate database from MySQL 8 0 21 to MariaDB 10 5 10. How to avoid and quick fix ERROR 1273 (HY000) Unknown collation: ‘utf8mb4_0900_ai_ci’. ?