Fatal error: Cannot redeclare has_block() (previously declared in /homepages/17/d584232436/htdocs/clickandbuilds/TetraClad/wp-includes/blocks.php:81) in /homepages/17/d584232436/htdocs/clickandbuilds/TetraClad/wp-content/plugins/multiple-content-blocks/assets/inc/template-tags.php on line 67