Support » Fixing WordPress » Plugin.php Error on Line 235

  • On all pages and posts, I’m getting this error – Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘wp_maybe_decline_date’ not found or invalid function name in /home/domain/public_html/classes/wp-includes/plugin.php on line 235.

    I’ve disabled all plugins and theme, and it’s still there. Any ideas on how to fix? Any help will be greatly appreciated.

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  • I was having a similar problem recently with a clients website and after hours of fighting with various fixes we decided to do a full backup and click the “Re-install Now” option on the Updates page in the admin panel… Once it was done reinstalling the core files our problem was solved.

    Don’t forget to backup first though.

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