Hello @Sokhna
Caused by: org.postgresql.util.PSQLException: ERROR: cannot alter type of a column used by a view or rule
Detail: rule RETURN on view trackedentityattributevalueaudit depends on column “trackedentityattributevalueauditid”
it seems that the problem comes from the SQL views. You have to delete them before upgrade.
You can read this topic for more information Upgrading from 2.30 to 2.31dev(CI server)
Regards;