Relational Migrator error message for verifying link function

The Relational Migrator is version 1.11 and is installed on Windows
The source database is MySQL 5.7.41
Use the IP address to link and set the migration user according to the document
THE JAVA VERSION IS 8.30 AND HAS BEEN PLACED IN THE SPECIFIED DIRECTORY
There is an error message when testing the link, Error content: no.user is not function