UPDATE YOAST SEO MAKE ERROR 500

@pexys Can you please let us know whether the update that caused the 500 error was the 9.0.3 update or 9.1 ?

Also, did something go wrong with the update the caused you to only have to restore the plugin’s files, or was the update completed successfully and the 500 error was due to some type of incompatibility with your site or configuration? If the update did complete successfully and the 500 error still occurred this may be due to a conflict as you can sometimes experience functionality problems or unexpected behavior from the plugin due to plugin or theme conflicts. Can you confirm you have performed a complete plugin/theme conflict check by disabling other plugins, and resetting the theme to a default such as twentyseventeen? We have additional information on how to check for a conflict here: https://kb.yoast.com/kb/how-to-check-for-plugin-conflicts/

Also, we understand that as the plugin caused an error on the site requiring a restore that you may not want to perform a conflict check on a live site. To perform a conflict check without affecting your main site you may want to create a staging site. Some staging sites may be provided by your host provider. We ask that you please speak with them. Additionally, if needed, this guide explains more about creating a staging site: http://www.wpbeginner.com/wp-tutorials/how-to-create-staging-environment-for-a-wordpress-site/.