MySQL error code
MySQL error 3721
MySQL server error 3721 is ER_INVALID_DEFAULT_UTF8MB4_COLLATION, reported with SQLSTATE HY000.
Invalid default collation %s: utf8mb4_0900_ai_ci or utf8mb4_general_ci expected
| Error | 3721 |
|---|---|
| Name | ER_INVALID_DEFAULT_UTF8MB4_COLLATION |
| SQLSTATE | HY000 |
| Group | Server errors |
Source: MySQL 8.4 Error Reference