Jhipster - MySQL java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: NO)

Setting password to '' is not a secure practice. JHipster generated app requires mysql password in a couple of places. If you set this correctly, the app can connect to the db using the password.

1. pom.xml (Maven) or liquibase.gradle (Gradle) for liquibase plugin
2. In application-dev.yml and application-prod.yml in src/main/resources/config folder.

Hope it helps.