Fatal error: Uncaught Error: Call to undefined function register_block_type() in /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/controllers/BlockController.php:18 Stack trace: #0 /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/controllers/BlockController.php(109): QLIGG_Block_Controller->init() #1 /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/controllers/BlockController.php(115): QLIGG_Block_Controller::instance() #2 /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/backend.php(38): include_once('/var/www/vhosts...') #3 /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/backend.php(13): QLIGG_Backend->includes() #4 /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/inclu in /var/www/vhosts/39/216245/webspace/siteapps/WordPress-233261/htdocs/wp-content/plugins/insta-gallery/includes/controllers/BlockController.php on line 18