The system is currently undergoing an upgrade of the Semantic MediaWiki extension together with its data repository and we would like to ask you for your patience and allow the maintenance to continue before the wiki can be made accessible again.
3.1.1 (smw:2019-09-23)
The extension tries to minimize the impact and downtime by deferring most of its maintenance tasks to after the update.php but some database related changes are required to finish first to avoid data inconsistencies. It can include:
An estimation as to when the upgrade is going to be finished is difficult to predict as it depends on the size of the data repository and the available hardware and can take a moment for larger wikis to complete.
Please contact your local administrator to get more information about the progress.