spotted in the logs:

Fatal error: Call to a member function isRedirect() on a non-object at /usr/local/apache/common-local/php-1.24wmf14/extensions/CirrusSearch/includes/Updater.php on line 124

Backtrace:
#0 /usr/local/apache/common-local/php-1.24wmf14/extensions/CirrusSearch/includes/Updater.php(124): CirrusSearch\Updater::traceRedirects()
#1 /usr/local/apache/common-local/php-1.24wmf14/extensions/CirrusSearch/includes/Updater.php(60): CirrusSearch\Updater->traceRedirects(Object(Title))
#2 /usr/local/apache/common-local/php-1.24wmf14/extensions/CirrusSearch/includes/Job/LinksUpdate.php(48): CirrusSearch\Updater->updateFromTitle(Object(Title))
#3 /usr/local/apache/common-local/php-1.24wmf14/extensions/CirrusSearch/includes/Job/Job.php(55): CirrusSearch\Job\LinksUpdate->doJob()
#4 /usr/local/apache/common-local/php-1.24wmf14/maintenance/runJobs.php(108): CirrusSearch\Job\Job->run()
#5 /usr/local/apache/common-local/php-1.24wmf14/maintenance/doMaintenance.php(109): RunJobs->execute()

Version: unspecified
Severity: normal