Liquibase Validation Failed Exception - change sets check sum - postgresql

Question

After launch the application, I get an error:
Caused by: liquibase.exception.ValidationFailedException: Validation Failed: 1 change sets checksum was: 8:2b2936713e8d9aea052c3122fd81faec but now it is:
8:ed8f7550fdd9809f4f6bf0f2d83dbbd8
The error points to such a table:
create table car (
id bigint not null auto_increment PRIMARY KEY,
name varchar(255) not null,
category varchar(255) not null
);
I read about this error and it was pointed out to use the mvn liquibase:clearCheckSums command but in the terminal I get the error: Error: -classpath requires class path specification (I run the command in the project folder)

Answer 1

The error indicates that a changelog that already run now is running with some changes. If you change something on an already run changelog then the checksum changes and this error is completely normal.
Check your databasechangelog table for the mentioned checksum to verify the changelog that crashes. The solutions are usually not to change the checksum of an already run changelog. If you can drop this changelog from the database and run it again will work fine. Sometimes the same changelog crashes without changing anything. This happening to me all the time because of the line seperator. For example, on IntleliJ you can change it from here:
Check what line separator do you need by testing :)