I’m running Orchard Core and have created a custom IRule that needs to query the Content Items. (Obviously querying the DB is time-consuming, so we only do this if something happened and we need to rebuild our redirects cache.) To do so, I am getting an IOrchardHelper from the service provider, and using that helper, I’m executing

var listCi = await orchardHelper.GetContentItemByAliasAsync("redirects-list", false);

However, this is throwing a NullReferenceException, because GetService<ISession>() returns null, but AliasPartContentHandleHelper.QueryAliasIndex(session, alias) assumes that session is non-null.

Is there anyway to adjust things so that GetService<ISession>() returns a session?