Fatal error: Uncaught Error: Class "Yoast\WP\SEO\Generators\Schema\Main_Image" not found in /htdocs/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php:305
Stack trace:
#0 /htdocs/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(49): Yoast\WP\SEO\Generators\Schema_Generator->get_graph_pieces(Object(Yoast\WP\SEO\Context\Meta_Tags_Context))
#1 /htdocs/wp-content/plugins/wordpress-seo/src/presentations/indexable-presentation.php(720): Yoast\WP\SEO\Generators\Schema_Generator->generate(Object(Yoast\WP\SEO\Context\Meta_Tags_Context))
#2 /htdocs/wp-content/plugins/wordpress-seo/src/presentations/abstract-presentation.php(66): Yoast\WP\SEO\Presentations\Indexable_Presentation->generate_schema()
#3 /htdocs/wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php(61): Yoast\WP\SEO\Presentations\Abstract_Presentation->__get('schema')
#4 /htdocs/wp-content/plugins/wordpress-seo/src/presenters/schema-presenter.php(45): Yoast\WP\SEO\Presenters\Schema_Presenter->get()
#5 /htdocs/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(419): Yoast\WP\SEO\Presenters\Schema_Presenter->present()
#6 /htdocs/wp-includes/class-wp-hook.php(341): Yoast\WP\SEO\Integrations\Front_End_Integration->present_head('')
#7 /htdocs/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array)
#8 /htdocs/wp-includes/plugin.php(522): WP_Hook->do_action(Array)
#9 /htdocs/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(390): do_action('wpseo_head')
#10 /htdocs/wp-includes/class-wp-hook.php(341): Yoast\WP\SEO\Integrations\Front_End_Integration->call_wpseo_head('')
#11 /htdocs/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array)
#12 /htdocs/wp-includes/plugin.php(522): WP_Hook->do_action(Array)
#13 /htdocs/wp-includes/general-template.php(3197): do_action('wp_head')
#14 /htdocs/wp-content/themes/astra/header.php(31): wp_head()
#15 /htdocs/wp-includes/template.php(814): require_once('/htdocs/wp-cont...')
#16 /htdocs/wp-includes/template.php(749): load_template('/htdocs/wp-cont...', true, Array)
#17 /htdocs/wp-includes/general-template.php(48): locate_template(Array, true, true, Array)
#18 /htdocs/wp-content/themes/astra/404.php(15): get_header()
#19 /htdocs/wp-includes/template-loader.php(132): include('/htdocs/wp-cont...')
#20 /htdocs/wp-blog-header.php(19): require_once('/htdocs/wp-incl...')
#21 /htdocs/index.php(41): require('/htdocs/wp-blog...')
#22 {main}
thrown in /htdocs/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php on line 305