Title: API version warnings in admin area
Last modified: June 8, 2026

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# API version warnings in admin area

 *  [louiseegret](https://wordpress.org/support/users/louiseegret/)
 * (@louiseegret)
 * [4 weeks ago](https://wordpress.org/support/topic/api-version-warnings-in-admin-area/)
 * When editing pages in the admin area, there are console warnings for every block
   as follows –
 *     ```wp-block-code
       deprecated.min.js?ver=990e85f234fee8f7d446:1 Block with API version 2 or lower is deprecated since version 6.9. See: https://developer.wordpress.org/block-editor/reference-guides/block-api/block-api-versions/block-migration-for-iframe-editor-compatibility/ Note: The block "nhsblocks/nhstabs" is registered with API version 2. This means that the post editor may work as a non-iframe editor. Since all editors are planned to work as iframes in the future, set the apiVersion field to 3 and test the block inside the iframe editor.
       ```
   
 *     ```wp-block-code
       nhsl-block-editor-styles-css was added to the iframe incorrectly. Please use block.json or enqueue_block_assets to add styles to the iframe.
       ```
   
 * I have WordPress v7.0 / Nightingale theme, and all my other plugins are deactivated
   apart from Nightingale companion.
 * No errors or warnings on frontend.

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 * 0 replies
 * 1 participant
 * Last reply from: [louiseegret](https://wordpress.org/support/users/louiseegret/)
 * Last activity: [4 weeks ago](https://wordpress.org/support/topic/api-version-warnings-in-admin-area/)
 * Status: not resolved