[wp-trac] [WordPress Trac] #53352: Bug in theme Twenty One

[WordPress Trac]

#53352: Bug in theme Twenty One
---------------------------+-----------------------------
 Reporter:  karenaug       |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Bundled Theme  |    Version:  5.7.2
 Severity:  normal         |   Keywords:
  Focuses:  template       |
---------------------------+-----------------------------
 Hello,

 When I open my blog, I get the following error message:
 Warning: Illegal string offset 'custom_css_post_id' in /home/customer/www
 /marie-louisa.com/public_html/wp-includes/theme.php on line 1063

 In the dashboard I see the following message:
 ng offset 'nav_menu_locations' in /home/customer/www/marie-
 louisa.com/public_html/wp-includes/theme.php on line 1063

 Warning: Cannot modify header information - headers already sent by
 (output started at /home/customer/www/marie-louisa.com/public_html/wp-
 includes/theme.php:1063) in /home/customer/www/marie-
 louisa.com/public_html/wp-includes/functions.php on line 6362

 Line 1063 is $mods[ $name ] = apply_filters( “pre_set_theme_mod_{$name}”,
 $value, $old_value );

 I have tried: uploading wordpress again with ftp, clearing caches,
 reinstalling the twenty twenty one theme, deactivated plugins, uploading
 the theme.php file again.
 I don't see this bug when I activate other themes.

 The forum thread is: https://wordpress.org/support/topic/theme-
 down/page/2/#post-14525964

 Is there anything else I can do?

 Kind regards,

 Karen

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Ticket URL: <https://core.trac.wordpress.org/ticket/53352>
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