Title: Error: WP_Theme_JSON_Data_Gutenberg not found
Last modified: January 31, 2023

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# Error: WP_Theme_JSON_Data_Gutenberg not found

 *  Resolved [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * (@shabti)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/)
 * Hello, thanks for this great plugin. After updating to the latest version we 
   get this error:
   **Fatal error: Uncaught Error: Class ‘WP_Theme_JSON_Data_Gutenberg’
   not found in C:\wamp64\www\local-site\wp-content\plugins\blocks-everywhere\classes\
   class-editor.php on line **_33_Maybe you need a forward slash \**WP_Theme_JSON_Data_Gutenberg’**?

Viewing 8 replies - 1 through 8 (of 8 total)

 *  Thread Starter [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * (@shabti)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424752)
 * Actually I see there is a forward slash…. Why am I getting this error?
 *  Plugin Author [John Godley](https://wordpress.org/support/users/johnny5/)
 * (@johnny5)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424766)
 * You need to use the Gutenberg plugin to use Blocks Everywhere.
 *  Thread Starter [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * (@shabti)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424834)
 * Thanks for the quick reply.
 * Why is that? Is it using features that aren’t yet in core?
 *  Plugin Author [John Godley](https://wordpress.org/support/users/johnny5/)
 * (@johnny5)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424841)
 * Yes, there may be times when it uses features that aren’t in the Gutenberg released
   with WP (which could be months old).
 *  Thread Starter [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * (@shabti)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424862)
 * ok thanks. Just to let you know, I commented out the filter that calls this function
   and everything works great.
 * I think if you really want people to actually use this already, you should make
   it compatible with the current version of Gutenberg
 *  Plugin Author [John Godley](https://wordpress.org/support/users/johnny5/)
 * (@johnny5)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424865)
 * Everything may appear to work great for you, but the code is needed for other
   sites.
 * The plugin readme states it requires the plugin version of Gutenberg. Due to 
   the nature of the plugin this requirement is unlikely to change.
 *  Plugin Author [John Godley](https://wordpress.org/support/users/johnny5/)
 * (@johnny5)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424872)
 * > I commented out the filter that calls this function and everything works great.
 * There may also be features inside the editor that require the plugin version,
   and it may crash at some point unless you are using it.
 *  Thread Starter [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * (@shabti)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424882)
 * Ok thanks for letting me know. I guess this plugin is still in Beta, that’s fine

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘Error: WP_Theme_JSON_Data_Gutenberg not found’ is closed to new replies.

 * ![](https://ps.w.org/blocks-everywhere/assets/icon-256x256.png?rev=2814053)
 * [Blocks Everywhere](https://wordpress.org/plugins/blocks-everywhere/)
 * [Support Threads](https://wordpress.org/support/plugin/blocks-everywhere/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/blocks-everywhere/unresolved/)
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 * 8 replies
 * 2 participants
 * Last reply from: [Shabti Kaplan](https://wordpress.org/support/users/shabti/)
 * Last activity: [3 years, 4 months ago](https://wordpress.org/support/topic/error-wp_theme_json_data_gutenberg-not-found/#post-16424882)
 * Status: resolved