Problem with hub.consumium.org

Unfortunately for a longer time now https://hub.consumium.org has been slightly misconfigured: when the cronjob to poll changes runs it warns that it fails to open /var/www/hubzilla//store/[data]/smarty3. I have searched extensively to find information where it gets that duplicate slash 'hubzilla//store' but without luck. Now I have opened a ticket and lets hope someone has an answer https://framagit.org/hubzilla/core/issues/1248.

Once this issue has been resolved I will upgrade the Hubzilla to the latest stable (though there are next to none advice on how to go about the upgrade process). Possible complication may be the fact that Hubzilla codebase has moved from Github to Framagit.org, but lets see how it goes.