Title: PHP 8 and wordpress 6 error Last modified: June 5, 2022 --- # PHP 8 and wordpress 6 error * Resolved [Moumen Ahmed](https://wordpress.org/support/users/etswak1/) * (@etswak1) * [4 years ago](https://wordpress.org/support/topic/php-8-and-wordpress-6-error/) * Hello i after i update my site to V6 of wordpress i get a lot of error on my nginx logs related to Rank math plugin her is error . * ``` FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /wp-content/plugins/seo-by-rank-math/includes/modules/schema/blocks/class-block-howto.php:391 Stack trace: #0 /wp-content/plugins/seo-by-rank-math/includes/modules/schema/blocks/class-block-howto.php(132): RankMath\Schema\Block_HowTo->add_duration() #1 /wp-includes/class-wp-hook.php(307): RankMath\Schema\Block_HowTo->add_graph() #2 /wp-includes/plugin.php(235): WP_Hook->apply_filters() #3 /wp-content/plugins/seo-by-rank-math/includes/traits/class-hooker.php(102): apply_filters_ref_array() #4 /wp-content/plugins/seo-by-rank-math/includes/modules/schema/blocks/class-block-parser.php(61): RankMath\Schema\Block_Parser->do_filter() #5 /wp-includes/class-wp-hook.php(309): RankMath\Schema\Block_Parser->parse() #6 /wp-includes/plugin.php(235): WP_Hook->apply_filters() #7 while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /how-to-add-ap/?preview_id=2222&preview_nonce=7c04e2607f&preview=true&_thumbnail_id=2254 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=2222&action=edit" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 158PHP message: PHP Warning: Undefined array key "@type" in /wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 158" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=2222&action=edit&classic-editor&message=4 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=2222&action=edit" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=664&action=edit&classic-editor&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor&message=1 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=220&action=edit&classic-editor&classic-editor__forget" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor&message=4 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=220&action=edit" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=2222&action=edit&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?s=edit-my-ap_status=all&post_type=post&action=-1&m=0&cat=0&seo-filter&schema-filter=none&paged=1&action2=-1" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 1162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=2222&action=edit&classic-editor&message=4 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=2222&action=edit" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 162.77.7.7, server: etswak.net, request: "GET /wp-admin/post.php?post=2222&action=edit&classic-editor&message=4 HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/post.php?post=2222&action=edit" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 141.101.105.179, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 141.101.105.179, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175PHP message: PHP Warning: Undefined array key "@type" in wordpress/wp-content/plugins/seo-by-rank-math/includes/modules/schema/class-db.php on line 175" while reading response header from upstream, client: 141.101.105.179, server: etswak.net, request: "GET /wp-admin/post.php?post=220&action=edit&classic-editor&classic-editor__forget HTTP/1.1", upstream: "fastcgi://unix:/run/php/php8.0-fpm.sock:", host: "etswak.net", referrer: "https://etswak.net/wp-admin/edit.php?post_type=page" ``` Viewing 2 replies - 1 through 2 (of 2 total) * Thread Starter [Moumen Ahmed](https://wordpress.org/support/users/etswak1/) * (@etswak1) * [4 years ago](https://wordpress.org/support/topic/php-8-and-wordpress-6-error/#post-15724933) * So far 4 days and no one has responded to the query, how you want people buy the pro version it’s really disappoint . * Plugin Support [Rank Math Support](https://wordpress.org/support/users/rankmathteam/) * (@rankmathteam) * [4 years ago](https://wordpress.org/support/topic/php-8-and-wordpress-6-error/#post-15728198) * Hello [@etswak1](https://wordpress.org/support/users/etswak1/), * Thank you for contacting the support. Sorry for the unexpected delay and sorry for any inconvenience that might have been caused due to that. * For faster and better help, please follow this thread from next time onwards: [https://wordpress.org/support/topic/attention-read-this-before-posting/](https://wordpress.org/support/topic/attention-read-this-before-posting/) * Also, we have fixed the issue with the HowTo block’s PHP errors in our recent update. Please make sure that you are using the latest version of the plugin: [https://rankmath.com/changelog/](https://rankmath.com/changelog/) * If the issue persists, please follow this guide to check for a possible plugin/ theme conflict: [https://rankmath.com/kb/check-plugin-conflicts/](https://rankmath.com/kb/check-plugin-conflicts/) * Let us know how that goes. Looking forward to helping you. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘PHP 8 and wordpress 6 error’ is closed to new replies. * ![](https://ps.w.org/seo-by-rank-math/assets/icon.svg?rev=3438330) * [Rank Math SEO – AI SEO Tools to Dominate SEO Rankings](https://wordpress.org/plugins/seo-by-rank-math/) * [Frequently Asked Questions](https://wordpress.org/plugins/seo-by-rank-math/#faq) * [Support Threads](https://wordpress.org/support/plugin/seo-by-rank-math/) * [Active Topics](https://wordpress.org/support/plugin/seo-by-rank-math/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/seo-by-rank-math/unresolved/) * [Reviews](https://wordpress.org/support/plugin/seo-by-rank-math/reviews/) * 2 replies * 2 participants * Last reply from: [Rank Math Support](https://wordpress.org/support/users/rankmathteam/) * Last activity: [4 years ago](https://wordpress.org/support/topic/php-8-and-wordpress-6-error/#post-15728198) * Status: resolved