Today, I discovered that this happens with updateMenteeData.php at testwiki:
[urbanecm@mwmaint1002 /srv/mediawiki/php]$ mwscript extensions/GrowthExperiments/maintenance/updateMenteeData.php --wiki=testwiki InvalidArgumentException from line 2690 of /srv/mediawiki/php-1.37.0-wmf.23/includes/libs/rdbms/database/Database.php: Wikimedia\Rdbms\Database::makeList: empty input for field actor_rev_user.actor_user #0 /srv/mediawiki/php-1.37.0-wmf.23/includes/libs/rdbms/database/Database.php(2071): Wikimedia\Rdbms\Database->makeList(Array, 1) #1 /srv/mediawiki/php-1.37.0-wmf.23/includes/libs/rdbms/database/Database.php(2010): Wikimedia\Rdbms\Database->selectSQLText(Array, Array, Array, 'GrowthExperimen...', Array, Array) #2 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/includes/MentorDashboard/MenteeOverview/UncachedMenteeOverviewDataProvider.php(159): Wikimedia\Rdbms\Database->select(Array, Array, Array, 'GrowthExperimen...', Array, Array) #3 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/includes/MentorDashboard/MenteeOverview/UncachedMenteeOverviewDataProvider.php(175): GrowthExperiments\MentorDashboard\MenteeOverview\UncachedMenteeOverviewDataProvider->getLastEditTimestampForUsers(Array) #4 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/includes/MentorDashboard/MenteeOverview/UncachedMenteeOverviewDataProvider.php(136): GrowthExperiments\MentorDashboard\MenteeOverview\UncachedMenteeOverviewDataProvider->filterMenteesByLastEdit(Array) #5 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/includes/MentorDashboard/MenteeOverview/UncachedMenteeOverviewDataProvider.php(197): GrowthExperiments\MentorDashboard\MenteeOverview\UncachedMenteeOverviewDataProvider->getFilteredMenteesForMentor(Object(User)) #6 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/maintenance/updateMenteeData.php(106): GrowthExperiments\MentorDashboard\MenteeOverview\UncachedMenteeOverviewDataProvider->getFormattedDataForMentor(Object(User)) #7 /srv/mediawiki/php-1.37.0-wmf.23/maintenance/doMaintenance.php(108): GrowthExperiments\Maintenance\UpdateMenteeData->execute() #8 /srv/mediawiki/php-1.37.0-wmf.23/extensions/GrowthExperiments/maintenance/updateMenteeData.php(200): require_once('/srv/mediawiki/...') #9 /srv/mediawiki/multiversion/MWScript.php(116): require_once('/srv/mediawiki/...') #10 {main} [urbanecm@mwmaint1002 /srv/mediawiki/php]$
I'm not sure why. Might be related to some user not having any mentees?