[wp-trac] [WordPress Trac] #64656: Fatal error on new font library admin page

WordPress Trac noreply at wordpress.org
Wed Feb 18 03:47:25 UTC 2026


#64656: Fatal error on new font library admin page
----------------------------+--------------------------
 Reporter:  desrosj         |       Owner:  youknowriad
     Type:  defect (bug)    |      Status:  reviewing
 Priority:  normal          |   Milestone:  7.0
Component:  Administration  |     Version:
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
----------------------------+--------------------------

Comment (by dd32):

 I just ran into this as well, similar, not quote the same:

 {{{
 GET https://example.org/wp-admin/themes.php?page=font-library-wp-admin

 Uncaught Error: Failed opening required 'wp-includes/build/constants.php'
 (include_path='.:')
 in wp-includes/build/routes.php on line 44

 Call stack:

 wp_register_page_routes(array, 'wp_register_font_library_wp_admin_route')
 wp_register_font_library_wp_admin_page_routes('')
 WP_Hook::apply_filters('', array)
 WP_Hook::do_action(array)
 do_action('font-library-wp-admin_init')
 gutenberg_font_library_wp_admin_enqueue_scripts('appearance_page_font-
 library-wp-admin')
 WP_Hook::apply_filters(NULL, array)
 WP_Hook::do_action(array)
 do_action('admin_enqueue_scripts', 'appearance_page_font-library-wp-
 admin')
 require_once('wp-admin/admin-header.php')
 require_once('wp-admin/admin.php')
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/64656#comment:2>
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