When Redis is used for the job queues we get this error when an article
is saved. But only on the wikis that use SMW, nl.scoutwiki.org and
[3d4eebe7] /index.php?title=Zuiderkruisgroep&action=submit Exception
from line 840 of
server error: Could not insert 1 htmlCacheUpdate job(s).
> /srv/www/scoutwiki/htdocs/includes/jobqueue/JobQueueRedis.php: Redis
> server error: Could not insert 1 htmlCacheUpdate job(s).
We use HTMLCacheUpdateJob here  to ensure that the html is updated
as well when storing a subject which for the normal JobQueue works as
I suggest you report the issue about `htmlCacheUpdate ` /
`JobQueueRedis` to MW and disable the `smwgAutoRefreshSubject` setting
(of course with the impact that the parser cache isn't refreshed) for
as long as the issue isn't fixed.
This isn't a SMW issue (as the stack trace clearly indicates an issue
between htmlCacheUpdate + JobQueueRedis) therefore your best hope is
that someone on the MW side can fix this.