We have been working on reproducing your environment and we also obtained the same issue. However, the version you are upgrading from is from 2016 (it's 4 years old). That means that there will probably be so many incompatibilities during the upgrade process.
I suggest you ask in the official forums of ReviewBoard to know the best way to migrate your version to a newer version. I suggest you install the latest version using the Bitnami installer and then migrate the data from the current installation to the new one but I don't know if that's even possible. The ReviewBoard developers should give you more information.