Title: Fatal Error: Version: 6.3 Last modified: February 15, 2018 --- # Fatal Error: Version: 6.3 * [Ivcata](https://wordpress.org/support/users/ivcata/) * (@ivcata) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/) * Hi, * Before this Fatal Error for a long time when I dismiss the plugin notifications after a while they pop up again. * Now and Fatal Error. * Why is that? * Here is the message: * Fatal error: Uncaught TypeError: Argument 2 passed to WPSEO_Link_Watcher::save_post() must be an instance of WP_Post, null given, called in /home/ABC/public_html/wp- includes/class-wp-hook.php on line 288 and defined in /home/ABC/public_html/wp- content/plugins/wordpress-seo/admin/links/class-link-watcher.php:41 Stack trace:# 0 /home/ABC/public_html/wp-includes/class-wp-hook.php(288): WPSEO_Link_Watcher- >save_post(0, NULL) #1 /home/ABC/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/ABC/public_html/wp-includes/plugin. php(453): WP_Hook->do_action(Array) #3 /home/ABC/public_html/wp-includes/post. php(3581): do_action(‘save_post’, 0, NULL, false) #4 /home/ABC/public_html/wp- admin/includes/post.php(608): wp_insert_post(Array) #5 /home/ABC/public_html/ wp-admin/post-new.php(70): get_default_post_to_edit(‘page’, true) #6 {main} thrown in /home/ABC/public_html/wp-content/plugins/wordpress-seo/admin/links/class-link- watcher.php on line 41 * empty value in /home/ABC/public_html/wp-admin/includes/post.php on line 642 * Greetings, * Ivo - This topic was modified 8 years, 4 months ago by [Ivcata](https://wordpress.org/support/users/ivcata/). - This topic was modified 8 years, 4 months ago by [Ivcata](https://wordpress.org/support/users/ivcata/). Viewing 8 replies - 1 through 8 (of 8 total) * [monbauza](https://wordpress.org/support/users/monbauza/) * (@monbauza) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9976297) * HI [@ivcata](https://wordpress.org/support/users/ivcata/), * Thanks for your comment. * We are sorry to hear you’re experiencing problems with our plugin. * We’d recommend you perform a [conflict check](https://kb.yoast.com/kb/how-to-check-for-plugin-conflicts/) and verify whether the error still occurs with all non-Yoast plugins deactivated and a deafult WordPress theme. * Other users reported a similar issue while they use Yoast SEO in conjunction with the_ CPT UI_ or the _Theme Switcha_ plugins. Please, refer to this GitHub issue for more information: [https://github.com/Yoast/wordpress-seo/issues/7531](https://github.com/Yoast/wordpress-seo/issues/7531) * If you still get the fatal error while all non-Yoast plugins are dectivated and your theme is on Twenty Seventeen, we’d kindly ask you to contribute to the bug report on GitHub with as much information as possible so that our developers can reproduce the problem. This KB article explains [how to write a good bug report](https://kb.yoast.com/kb/how-to-write-a-good-bug-report/). * We apologize for any inconvenience this has caused you. * Thread Starter [Ivcata](https://wordpress.org/support/users/ivcata/) * (@ivcata) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9978636) * Hi [@monbauza](https://wordpress.org/support/users/monbauza/), * Thanks for your kind support. * I refer this issue to GitHub: * [https://github.com/Yoast/wordpress-seo/issues/7531](https://github.com/Yoast/wordpress-seo/issues/7531) * Where to look for future assistance – here or there? * Thank You * [monbauza](https://wordpress.org/support/users/monbauza/) * (@monbauza) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9980742) * Hi [@ivcata](https://wordpress.org/support/users/ivcata/), * Thanks for providing such a comprehensive report on GitHub. Our developers will look into it and try to find a solution. In the report, we see that you have two instances of Yoast SEO in your setup. We are not sure if this may related to the fatal error. Can you please delete both instances and make a [fresh install ](https://kb.yoast.com/kb/installation-guide-for-wordpress-seo/) of the plugin? The SEO data and plugin settings are stored in the WordPress database so you won’t lose any settings. * Thread Starter [Ivcata](https://wordpress.org/support/users/ivcata/) * (@ivcata) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9982895) * Hi [@monbauza](https://wordpress.org/support/users/monbauza/), * I lost all seo descriptions but before that I migrated with SEO Data Transporter Plugin – (to backup my SEO data). * I did everything but unfortunately the problem remains. * Thanks - This reply was modified 8 years, 4 months ago by [Ivcata](https://wordpress.org/support/users/ivcata/). * [monbauza](https://wordpress.org/support/users/monbauza/) * (@monbauza) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9988451) * Hi [@ivcata](https://wordpress.org/support/users/ivcata/), * We are sorry to hear the problem remains for you. We’ve informed the appropriate team members so that our developers take a closer look at the GitHub issue and investigate the fatal error further. * Thread Starter [Ivcata](https://wordpress.org/support/users/ivcata/) * (@ivcata) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9990065) * Hi [@monbauza](https://wordpress.org/support/users/monbauza/), * Does that mean that I still can expect some help on this issue? * Do you need access to my website or hosting? * [monbauza](https://wordpress.org/support/users/monbauza/) * (@monbauza) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9992801) * Hi [@ivcata](https://wordpress.org/support/users/ivcata/), * Our developers will review the details you’ve provided on GitHub and try to reproduce the problem. If they need further information, they’ll contact you by leaving a comment in the GitHub issue. * Thread Starter [Ivcata](https://wordpress.org/support/users/ivcata/) * (@ivcata) * [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9994123) * Hi [@monbauza](https://wordpress.org/support/users/monbauza/), * OK, Thanks. Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Fatal Error: Version: 6.3’ is closed to new replies. * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908) * [Yoast SEO - Advanced SEO with real-time guidance and built-in AI](https://wordpress.org/plugins/wordpress-seo/) * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-seo/#faq) * [Support Threads](https://wordpress.org/support/plugin/wordpress-seo/) * [Active Topics](https://wordpress.org/support/plugin/wordpress-seo/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-seo/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wordpress-seo/reviews/) * 8 replies * 2 participants * Last reply from: [Ivcata](https://wordpress.org/support/users/ivcata/) * Last activity: [8 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-6-3/#post-9994123)