Fatal error: Uncaught Error: Class 'Yoast\WP\SEO\Generators\Schema\HowTo' not found
in /home/exascend/cn.exascend.com.exascend.com/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php on line 254

Call stack:

  1. Yoast\W\S\G\Schema_Generator::get_graph_pieces()
    wp-content/plugins/wordpress-seo/src/generators/schema-generator.php:52
  2. Yoast\W\S\G\Schema_Generator::generate()
    wp-content/plugins/wordpress-seo/src/presentations/indexable-presentation.php:654
  3. Yoast\W\S\P\Indexable_Presentation::generate_schema()
    wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php:64
  4. Yoast\W\S\P\Abstract_Presentation::__get()
    wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php:53
  5. Yoast\W\S\P\Schema_Presenter::get()
    wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php:37
  6. Yoast\W\S\P\Schema_Presenter::present()
    wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:316
  7. Yoast\W\S\I\Front_End_Integration::present_head()
    wp-includes/class-wp-hook.php:292
  8. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:316
  9. WP_Hook::do_action()
    wp-includes/plugin.php:484
  10. do_action()
    wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:290
  11. Yoast\W\S\I\Front_End_Integration::call_wpseo_head()
    wp-includes/class-wp-hook.php:292
  12. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:316
  13. WP_Hook::do_action()
    wp-includes/plugin.php:484
  14. do_action()
    wp-includes/general-template.php:3009
  15. wp_head()
    wp-content/themes/astra/header.php:26
  16. require_once()
    wp-includes/template.php:730
  17. load_template()
    wp-includes/template.php:676
  18. locate_template()
    wp-includes/general-template.php:48
  19. get_header()
    wp-content/plugins/elementor/modules/page-templates/templates/header-footer.php:9
  20. include()
    wp-includes/template-loader.php:106
  21. require_once()
    wp-blog-header.php:19
  22. require()
    index.php:17

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