Thank you very much everyone for your support. I have reported the issue in JIRA.
Originally, I was trying to upgrade my OpenMRS Platform 1.9.3 to the latest OpenMRS Platform 1.11.5, but encountered several problems which I posted in these topics:
Is there an alternative solution to migrate metadata to a new installation? Is there maybe also a way to transfer patient data (name, obs etc.) to a new installation?