Fatal error: Uncaught Error: Call to undefined function wp_is_block_theme() in /home3/omidzana/public_html/wp-content/plugins/schema-and-structured-data-for-wp/admin_section/common-function.php:5466 Stack trace: #0 /home3/omidzana/public_html/wp-content/plugins/schema-and-structured-data-for-wp/modules/reviews/class-saswp-review-feature-frontend.php(54): saswp_is_block_theme() #1 /home3/omidzana/public_html/wp-content/plugins/schema-and-structured-data-for-wp/modules/reviews/class-saswp-review-feature-frontend.php(1756): SASWP_Review_Feature_Frontend->__construct() #2 /home3/omidzana/public_html/wp-content/plugins/schema-and-structured-data-for-wp/structured-data-for-wp.php(109): require_once('/home3/omidzana...') #3 /home3/omidzana/public_html/wp-settings.php(391): include_once('/home3/omidzana...') #4 /home3/omidzana/public_html/wp-config.php(169): require_once('/home3/omidzana...') #5 /home3/omidzana/public_html/wp-load.php(37): require_once('/home3/omidzana...') #6 /home3/omidzana/public_html/wp-blog-header.php(13): r in /home3/omidzana/public_html/wp-content/plugins/schema-and-structured-data-for-wp/admin_section/common-function.php on line 5466