Title: using Classic editor – ux block editor ERROR message
Last modified: May 4, 2021

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# using Classic editor – ux block editor ERROR message

 *  Resolved [M](https://wordpress.org/support/users/artsitegallery/)
 * (@artsitegallery)
 * [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/)
 * started 2 weeks ago – trying to post new posts and update old
 * error message says:
 * **NOTICE: Trying to get property ‘post_type’ of non-object in ~~~/wp-content/
   premium-metabox.php/wordpress-seo-premium/classes/premium-metabox.php on line
   153**
 * as I have not been able to save my drafts or publish I am now using the classic
   editor and getting the message??
 * All help appreciated?
    WordPress 5.7.1

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [Rumejan](https://wordpress.org/support/users/onlyincebu/)
 * (@onlyincebu)
 * [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/#post-14395381)
 * Hello!
 * Can you please make sure you’re running the latest version of Yoast SEO (16.2)?
   Also, please make sure that your theme and ALL other plugins are up-to-date.
 * If the issue persists, we need you to perform a conflict check. The fastest way
   to do this is to **deactivate all non-Yoast plugins and switch to a standard 
   theme** like [Twenty Nineteen](https://wordpress.org/themes/twentynineteen/).
 * Test this on your development or staging site, if you have one. If not, we recommend
   using the [Health Check & Troubleshooting](https://wordpress.org/plugins/health-check/)
   plugin. This plugin allows you to run a conflict check **without affecting normal
   visitors to your site**.
 * As we can imagine that you’re unfamiliar with checking for conflicts, we’d like
   to point you to a step-by-step guide that will walk you through the process: 
   [How to check for plugin conflicts](https://kb.yoast.com/kb/how-to-check-for-plugin-conflicts/).
 * If you do not feel comfortable to do this yourself or if this does not solve 
   your issue, our [Yoast SEO Premium plugin](https://yoast.com/wordpress/plugins/seo/)
   comes with one year of (technical) support.`
 *  Thread Starter [M](https://wordpress.org/support/users/artsitegallery/)
 * (@artsitegallery)
 * [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/#post-14395434)
 * yes all plugins and themes are up to date – Yoast SEO Version 16.2
    Note there
   is a warning that Yoast SEO Premium has not been tested with current – latest-
   version of WordPress
 * Warning: This plugin has not been tested with your current version of WordPress.
 * Actually I just took a short cut and deactivated Seo Premium and it now works–
   definitely a bug. Hope they will fix soon.
 * Regarding premium support – I followed the links for that and ended up here –
   assumed I was on premium support?
    -  This reply was modified 5 years ago by [M](https://wordpress.org/support/users/artsitegallery/).
 *  [Rumejan](https://wordpress.org/support/users/onlyincebu/)
 * (@onlyincebu)
 * [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/#post-14395506)
 * If you’re using Yoast SEO Premium, you are eligible for premium support. Please
   get in touch with us via email at [support@yoast.com](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/support@yoast.com?output_format=md).
 *  Thread Starter [M](https://wordpress.org/support/users/artsitegallery/)
 * (@artsitegallery)
 * [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/#post-14395526)
 * Solved by using wp classic editor plugin and deactivating SEO Premium

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘using Classic editor – ux block editor ERROR message’ is closed to new
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 * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908)
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## Tags

 * [classes](https://wordpress.org/support/topic-tag/classes/)
 * [notice](https://wordpress.org/support/topic-tag/notice/)
 * [post_type](https://wordpress.org/support/topic-tag/post_type/)
 * [publishing failed](https://wordpress.org/support/topic-tag/publishing-failed/)
 * [Update Failed](https://wordpress.org/support/topic-tag/update-failed/)

 * 4 replies
 * 2 participants
 * Last reply from: [M](https://wordpress.org/support/users/artsitegallery/)
 * Last activity: [5 years ago](https://wordpress.org/support/topic/using-classic-editor-ux-block-editor-error-message/#post-14395526)
 * Status: resolved