[wp-trac] [WordPress Trac] #57446: Theme Switch, retrieve_widgets() Leading to Fatal Error

[WordPress Trac]

#57446: Theme Switch, retrieve_widgets() Leading to Fatal Error
--------------------------+------------------------------
 Reporter:  verygoode     |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  6.1.1
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
--------------------------+------------------------------

Comment (by verygoode):

 == Related options prior to the theme switch.

 **current_theme**
 {{{
 Enfold Child
 }}}




 **theme_mods_enfold-child**

 No widgets array.

 {{{
 a:2:{s:18:"nav_menu_locations";a:3:{s:4:"avia";i:73;s:5:"avia2";i:0;s:5:"avia3";i:0;}s:18:"custom_css_post_id";i:2960;}
 }}}

 **theme_switched**

 {{{
 empty
 }}}


 **Errors**

 Attempting to access /wp-admin/widgets.php generates the following error.


 {{{
 [11-Jan-2023 17:16:51 UTC] PHP Warning:  Invalid argument supplied for
 foreach() in /wordpress/core/6.1.1/wp-admin/widgets-form.php on line 82
 [11-Jan-2023 17:16:51 UTC] PHP Fatal error:  Uncaught Error: Cannot unset
 string offsets in /wordpress/core/6.1.1/wp-includes/widgets.php:1324
 Stack trace:
 #0 /wordpress/core/6.1.1/wp-admin/widgets-form.php(121):
 retrieve_widgets()
 #1 /wordpress/core/6.1.1/wp-admin/widgets.php(34):
 require('/wordpress/core...')
 #2 {main}
   thrown in /wordpress/core/6.1.1/wp-includes/widgets.php on line 1324
 }}}


 ----


 == Related options after theme switch

 Switched to Twenty Twenty-Three

 **current_theme**

 {{{
 Twenty Twenty-Three
 }}}


 **theme_mods_twentytwentythree**

 {{{
 a:2:{i:0;b:0;s:18:"nav_menu_locations";a:0:{}}
 }}}


 **theme_switched**

 {{{
 enfold-child
 }}}

 **Errors**
 Any attempts to interact with the site leads to the following.


 {{{
 Fatal error: Uncaught Error: Cannot unset string offsets in
 /wordpress/core/6.1.1/wp-includes/widgets.php:1324
 Stack trace:
 #0 /wordpress/core/6.1.1/wp-includes/widgets.php(1287):
 retrieve_widgets(true)
 #1 /wordpress/core/6.1.1/wp-includes/class-wp-hook.php(310):
 _wp_sidebars_changed('Enfold Child')
 #2 /wordpress/core/6.1.1/wp-includes/class-wp-hook.php(332):
 WP_Hook->apply_filters(NULL, Array)
 #3 /wordpress/core/6.1.1/wp-includes/plugin.php(517):
 WP_Hook->do_action(Array)
 #4 /wordpress/core/6.1.1/wp-includes/theme.php(3395):
 do_action('after_switch_th...', 'Enfold Child', Object(WP_Theme))
 #5 /wordpress/core/6.1.1/wp-includes/class-wp-hook.php(308):
 check_theme_switched('')
 #6 /wordpress/core/6.1.1/wp-includes/class-wp-hook.php(332):
 WP_Hook->apply_filters(NULL, Array)
 #7 /wordpress/core/6.1.1/wp-includes/plugin.php(517):
 WP_Hook->do_action(Array)
 #8 /wordpress/core/6.1.1/wp-settings.php(617): do_action('init')
 #9 phar:///usr/local/bin/wp-cli/vendor/wp-cli/wp-
 cli/php/WP_CLI/Runner.php(1336): require('/wordpress/core...')
 #10 phar:///usr/local/bin/wp-cli/vendor/wp-cli/wp-
 cli/php/WP_CLI/Runner.php(1254): WP_CLI\Runner->load_wordpress()
 #11 phar:///usr/local/bin/wp-cli/vendor/wp-cli/wp-
 cli/php/WP_CLI/Bootstrap/LaunchRunner.php(28): WP_CLI\Runner->start()
 #12 phar:///usr/local/bin/wp-cli/vendor/wp-cli/wp-
 cli/php/bootstrap.php(78):
 WP_CLI\Bootstrap\LaunchRunner->process(Object(WP_CLI\Bootstrap\BootstrapState))
 #13 phar:///usr/local/bin/wp-cli/vendor/wp-cli/wp-cli/php/wp-cli.php(32):
 WP_CLI\bootstrap()
 #14 phar:///usr/local/bin/wp-cli/php/boot-phar.php(11):
 include('phar:///usr/loc...')
 #15 /usr/local/bin/wp-cli(4): include('phar:///usr/loc...')
 #16 {main}
   thrown in /wordpress/core/6.1.1/wp-includes/widgets.php on line 1324
 Error: There has been a critical error on this website.Learn more about
 troubleshooting WordPress. There has been a critical error on this
 website.
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/57446#comment:1>
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