alertandautorenewssl cron empty email []

Hi,

I receive daily below email, an can't find the reason.
Yes it renew my SSL certificates, but why an empty email ?

Cron <root@xxxxxx> /usr/local/cwp/php71/bin/php /usr/local/cwpsrv/htdocs/resources/admin/include/alertandautorenewssl.php
[]