I don't know if this helps but I've tested the patch https://code.launchpad.net/~nteodosio/update-manager/+git/update-manager/+ref/jammy-json-to-api for Jammy by nteodosio and it fixes the problem.
I don't know if this helps but I've tested the patch https:/ /code.launchpad .net/~nteodosio /update- manager/ +git/update- manager/ +ref/jammy- json-to- api for Jammy by nteodosio and it fixes the problem.