Custom Fields
Support Meta Box AIO Uncaught Error: Class ‘MBBParser\Parsers\Metabox’ not found

  • Creator
  • #21234

    Here is the full error details:

    Error Details
    An error of type E_ERROR was caused in line 180 of the file /srv/htdocs/wp-content/plugins/meta-box-aio/vendor/meta-box/meta-box-builder/src/Edit.php. Error message: Uncaught Error: Class 'MBBParser\Parsers\MetaBox' not found in /srv/htdocs/wp-content/plugins/meta-box-aio/vendor/meta-box/meta-box-builder/src/Edit.php:180
    Stack trace:
    #0 /wordpress/core/5.5/wp-includes/class-wp-hook.php(289): MBB\Edit->update_meta_box(Array, Array)
    #1 /wordpress/core/5.5/wp-includes/plugin.php(206): WP_Hook->apply_filters(Array, Array)
    #2 /wordpress/core/5.5/wp-includes/post.php(3971): apply_filters('wp_insert_post_...', Array, Array, Array)
    #3 /wordpress/core/5.5/wp-includes/post.php(4354): wp_insert_post(Array, false)
    #4 /wordpress/core/5.5/wp-admin/includes/post.php(419): wp_update_post(Array)
    #5 /wordpress/core/5.5/wp-admin/post.php(227): edit_post()
    #6 {main}
Viewing 5 replies - 1 through 5 (of 5 total)
  • Author
  • #21237

    I get this error anytime I try to update or trash a custom field. So far, I’ve only tried with Blocks, so I cannot confirm whether this is affecting all custom field types or not.

    I did not seem to have any issues creating new custom fields for Blocks, just updating existing and trying to delete.

    Thanks for any insight you can lend.

    Long Nguyen


    Please update the new version 1.11.18 of the extension Meta Box AIO to fix this issue.

    Thank you.


    Hi Long,

    I currently have version 1.11.18 installed and am still seeing this issue:

    Current versions of Meta Box and Meta Box AIO
    Plugin Version Screenshot


    I also notice that the Code tab when editing the custom fields is showing an error:




    Completely deleting the plugin and reinstalling from the latest release under My Account seemed to work! Thanks!

Viewing 5 replies - 1 through 5 (of 5 total)
  • You must be logged in to reply to this topic.