Caused by: liquibase.exception.DatabaseException: (conn=117562) Can’t DROP FOREIGN KEY FK_DYWSERVICESERVI_ON_EMPLOYEE; check that it exists [Failed SQL: (1091) ALTER TABLE dynawash.DYW_SERVICE_SERVICE_ITEM DROP FOREIGN KEY FK_DYWSERVICESERVI_ON_EMPLOYEE]
During problem investigation I’ve found that ServiceServiceItem entity has three indexes defined with the same name: IDX_SERVICESERVICEITEM. This names duplication causes invalid diff changelog generation that you faced with.
So you need to delete that invalid changelog, set unique names for indexes and generate diff changelog again.