Fatal error: Uncaught Error: Undefined class constant 'WEBPAGE_HASH'
in /usr/hosts/domains/shiftdelete.net/public_html/wp-content/themes/shiftdelete/inc/yoast/schemas/class-thb-seo-product-schema.php on line 41
Call stack:
Yoast\W\S\G\S\Thb_Seo_Product_Schema::generate()
wp-content/plugins/wordpress-seo/src/generators/schema-generator.php:128Yoast\W\S\G\Schema_Generator::generate_graph()
wp-content/plugins/wordpress-seo/src/generators/schema-generator.php:75Yoast\W\S\G\Schema_Generator::generate()
wp-content/plugins/wordpress-seo/src/presentations/indexable-presentation.php:720Yoast\W\S\P\Indexable_Presentation::generate_schema()
wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php:66Yoast\W\S\P\Abstract_Presentation::__get()
wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php:61Yoast\W\S\P\Schema_Presenter::get()
wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php:45Yoast\W\S\P\Schema_Presenter::present()
wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:406Yoast\W\S\I\Front_End_Integration::present_head()
wp-includes/class-wp-hook.php:324WP_Hook::apply_filters()
wp-includes/class-wp-hook.php:348WP_Hook::do_action()
wp-includes/plugin.php:517do_action()
wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:377Yoast\W\S\I\Front_End_Integration::call_wpseo_head()
wp-includes/class-wp-hook.php:324WP_Hook::apply_filters()
wp-includes/class-wp-hook.php:348WP_Hook::do_action()
wp-includes/plugin.php:517do_action()
wp-includes/general-template.php:3050wp_head()
wp-content/themes/shiftdelete/header.php:34require_once()
wp-includes/template.php:810load_template()
wp-includes/template.php:745locate_template()
wp-includes/general-template.php:48get_header()
wp-content/themes/shiftdelete/single.php:2include()
wp-includes/template-loader.php:106require_once()
wp-blog-header.php:19require()
index.php:17