fix change owner key previous account
Previous account of identity was not fetched correctly leading to null error:
This is also a problem of subsquid, see https://github.com/subsquid/squid-sdk/issues/228
Gitlab was migrated to a new server. Everything should be back to normal and no visible change should remain. If you see anything wrong, please report them to https://forum.duniter.org/t/interventions-et-indisponibilite-des-forums-et-de-gitlab/7131/271
Previous account of identity was not fetched correctly leading to null error:
This is also a problem of subsquid, see https://github.com/subsquid/squid-sdk/issues/228