Error message

• Warning: date_timezone_set() expects parameter 1 to be DateTime, boolean given format_date()-en (/var/www/vhosts/elciego.es/httpdocs/includes/common.inc-ren 2133-garren lerroan).
• Warning: date_format() expects parameter 1 to be DateTimeInterface, boolean given format_date()-en (/var/www/vhosts/elciego.es/httpdocs/includes/common.inc-ren 2143-garren lerroan).