Yes, this is most probably related, since both tasks are invoked from Daily Maintenance script. Check that relevant cron jobs are present, e.g. (location may differ depending on OS) via:
# grep -r Daily /etc/cron*
/etc/cron.daily/50plesk-daily:/opt/psa/bin/sw-engine-pleskrun /opt/psa/admin/plib/DailyMaintainance/script.php >/dev/null 2>&1
/etc/cron.monthly/50plesk-monthly:/opt/psa/bin/sw-engine-pleskrun /opt/psa/admin/plib/DailyMaintainance/script.php monthly >/dev/null 2>&1
/etc/cron.weekly/50plesk-weekly:/opt/psa/bin/sw-engine-pleskrun /opt/psa/admin/plib/DailyMaintainance/script.php weekly >/dev/null 2>&1