Migrate 2.8.5 to 2.15.4 - Postgress

[RJ]

Hello,

   Trying to upgrade from 2.8.5 to 2.15 using offline and stuck with below error. Any ideas on how to move fwd under PostgreSQL

       > Done (0.005 s)

Migrating data to schema 89 ...

        > Done (0.017 s)

Migrating data to schema 90 ...

Exception in thread "main" com.google.gwtorm.server.OrmException: Cannot upgrade schema

        at com.google.gerrit.server.schema.SchemaUpdater.update(SchemaUpdater.java:120)

        at com.google.gerrit.pgm.init.BaseInit$SiteRun.upgradeSchema(BaseInit.java:389)

        at com.google.gerrit.pgm.init.BaseInit.run(BaseInit.java:146)

        at com.google.gerrit.pgm.util.AbstractProgram.main(AbstractProgram.java:61)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:498)

        at com.google.gerrit.launcher.GerritLauncher.invokeProgram(GerritLauncher.java:223)

        at com.google.gerrit.launcher.GerritLauncher.mainImpl(GerritLauncher.java:119)

        at com.google.gerrit.launcher.GerritLauncher.main(GerritLauncher.java:63)

        at Main.main(Main.java:24)

Caused by: org.postgresql.util.PSQLException: ERROR: column "size_bar_in_change_table" of relation "accounts" does not exist

  Position: 21

        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2440)

        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2183)

        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:308)

        at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:441)

        at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:365)

        at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:307)

        at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:293)

        at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:270)

        at org.postgresql.jdbc.PgStatement.executeUpdate(PgStatement.java:244)

        at com.google.gerrit.server.schema.Schema_90.migrateData(Schema_90.java:32)

        at com.google.gerrit.server.schema.SchemaVersion.migrateData(SchemaVersion.java:153)

        at com.google.gerrit.server.schema.SchemaVersion.upgradeFrom(SchemaVersion.java:92)

        at com.google.gerrit.server.schema.SchemaVersion.check(SchemaVersion.java:83)

        at com.google.gerrit.server.schema.SchemaUpdater.update(SchemaUpdater.java:118)

        ... 11 more