Fatal error: Uncaught ValueError: Unknown format specifier "Y" in /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/fields/class-field-upsell-site-review.php:23
Stack trace:
#0 /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/fields/class-field-upsell-site-review.php(23): sprintf('If you want mor...', '<a href="https:...', '</a>', '<a href="https:...', '</a>')
#1 /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/class-configuration-storage.php(23): WPSEO_Config_Field_Upsell_Site_Review->__construct()
#2 /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/class-configuration-service.php(110): WPSEO_Configuration_Storage->add_default_fields()
#3 /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/class-configuration-service.php(39): WPSEO_Configuration_Service->populate_configuration()
#4 /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/wp-seo-main.php(283): WPSEO_Configuration_Service->initialize()
#5 /home/www/umzuege-raab/wp-includes/class-wp-hook.php(324): wpseo_init_rest_api(Object(WP_REST_Server))
#6 /home/www/umzuege-raab/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#7 /home/www/umzuege-raab/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#8 /home/www/umzuege-raab/wp-includes/rest-api.php(597): do_action('rest_api_init', Object(WP_REST_Server))
#9 /home/www/umzuege-raab/wp-includes/rest-api.php(421): rest_get_server()
#10 /home/www/umzuege-raab/wp-includes/class-wp-hook.php(324): rest_api_loaded(Object(WP))
#11 /home/www/umzuege-raab/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#12 /home/www/umzuege-raab/wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#13 /home/www/umzuege-raab/wp-includes/class-wp.php(418): do_action_ref_array('parse_request', Array)
#14 /home/www/umzuege-raab/wp-includes/class-wp.php(813): WP->parse_request('')
#15 /home/www/umzuege-raab/wp-includes/functions.php(1336): WP->main('')
#16 /home/www/umzuege-raab/wp-blog-header.php(16): wp()
#17 /home/www/umzuege-raab/index.php(17): require('/home/www/umzue...')
#18 {main}
thrown in /home/www/umzuege-raab/wp-content/plugins/wordpress-seo/admin/config-ui/fields/class-field-upsell-site-review.php on line 23