[04-Jun-2017 13:10:49 UTC] [2017-06-04 13:10:49] EXCEPTION: (AphrontParameterQueryException) Array for %Ls conversion is empty. Query: user.phid IN (%Ls) at [<phutil>/src/xsprintf/qsprintf.php:261]
[04-Jun-2017 13:10:49 UTC] arcanist(), phabricator(), phutil(), security(), sprint(), wmf-ext-misc()
[04-Jun-2017 13:10:49 UTC]   #0 qsprintf_check_type(array, string, string) called at [<phutil>/src/xsprintf/qsprintf.php:134]
[04-Jun-2017 13:10:49 UTC]   #1 xsprintf_query(AphrontMySQLiDatabaseConnection, string, integer, array, integer) called at [<phutil>/src/xsprintf/xsprintf.php:70]
[04-Jun-2017 13:10:49 UTC]   #2 xsprintf(string, AphrontMySQLiDatabaseConnection, array) called at [<phutil>/src/xsprintf/qsprintf.php:64]
[04-Jun-2017 13:10:49 UTC]   #3 qsprintf(AphrontMySQLiDatabaseConnection, string, array) called at [<phabricator>/src/applications/people/query/PhabricatorPeopleQuery.php:292]
[04-Jun-2017 13:10:49 UTC]   #4 PhabricatorPeopleQuery::buildWhereClauseParts(AphrontMySQLiDatabaseConnection) called at [<phabricator>/src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php:281]
[04-Jun-2017 13:10:49 UTC]   #5 PhabricatorCursorPagedPolicyAwareQuery::buildWhereClause(AphrontMySQLiDatabaseConnection) called at [<phabricator>/src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php:104]
[04-Jun-2017 13:11:01 UTC]   #6 PhabricatorCursorPagedPolicyAwareQuery::loadStandardPageRowsWithConnection(AphrontMySQLiDatabaseConnection, string) called at [<phabricator>/src/infrastructure/query/policy/PhabricatorCursorPagedPolicyAwareQuery.php:90]
[04-Jun-2017 13:11:01 UTC]   #7 PhabricatorCursorPagedPolicyAwareQuery::loadStandardPageRows(PhabricatorUser) called at [<phabricator>/src/applications/people/query/PhabricatorPeopleQuery.php:167]
[04-Jun-2017 13:11:01 UTC]   #8 PhabricatorPeopleQuery::loadPage() called at [<phabricator>/src/infrastructure/query/policy/PhabricatorPolicyAwareQuery.php:236]
[04-Jun-2017 13:11:01 UTC]   #9 PhabricatorPolicyAwareQuery::execute() called at [<phabricator>/src/applications/calendar/notifications/PhabricatorCalendarNotificationEngine.php:126]
[04-Jun-2017 13:11:01 UTC]   #10 PhabricatorCalendarNotificationEngine::sendNotifications() called at [<phabricator>/src/applications/calendar/notifications/PhabricatorCalendarNotificationEngine.php:58]
[04-Jun-2017 13:11:01 UTC]   #11 PhabricatorCalendarNotificationEngine::publishNotifications() called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorTriggerDaemon.php:478]
[04-Jun-2017 13:11:01 UTC]   #12 PhabricatorTriggerDaemon::runCalendarNotifier(integer) called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorTriggerDaemon.php:110]
[04-Jun-2017 13:11:01 UTC]   #13 PhabricatorTriggerDaemon::run() called at [<phutil>/src/daemon/PhutilDaemon.php:219]
[04-Jun-2017 13:11:01 UTC]   #14 PhutilDaemon::execute() called at [<phutil>/scripts/daemon/exec/exec_daemon.php:131]
[04-Jun-2017 13:11:03 UTC] 2017-06-04 1:11:03 PM [SGNL] Overseer ("17889") received signal 2 ("SIGINT").
[04-Jun-2017 13:11:07 UTC] 2017-06-04 1:11:07 PM [OVER] Started new daemon overseer (with PID "2774").