Jmix 1.4 RC - Composite project: CommandExecutionException

Hi
I have created a composite project with 9 add-on projects. I have copied entities from another project. When I try to run/generate database scripts I get the following error message:

liquibase.command.CommandExecutionException: java.lang.IllegalStateException: Incorrect attribute type! Expected: Entity; Actual: java.util.List

How can I find the origin of the problem?

Found the issue. It was originated from many to many relations