jhipster liquibase validation error after modify entity

 ./mvnw clean

./mvnw liquibase:clearCheckSums

This will work, however you're missing the point of using Liquibase to track changes. For development purposes it's OK.

The correct way to fix that is to run ./mvnw liquibaseDiffChangeLog to create a diff changelog of the changes made to your database. This can then be added to the master.xml file as a new entry which can be applied next time you fire your app.

https://stackoverflow.com/questions/43207163/jhipster-liquibase-validation-error-after-modify-entity