Title: Add new plugin errors
Last modified: January 11, 2023

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# Add new plugin errors

 *  [robb1e](https://wordpress.org/support/users/robb1e/)
 * (@robb1e)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/add-new-plugin-errors/)
 * Hello folks,
 * My site has a few errors coming up when I go to the ‘plugins/add new’ page.
    
   At the very top I get these errors listed:
 * Warning: Undefined property: stdClass::$plugin in /homepages/22/d930133688/htdocs/
   wp-includes/class-wp-list-util.php on line 168
 * (The above error is listed 4 times)
 * Warning: Cannot modify header information – headers already sent by (output started
   at /homepages/22/d930133688/htdocs/wp-includes/class-wp-list-util.php:168) in/
   homepages/22/d930133688/htdocs/wp-admin/admin-header.php on line 9
 * Can someone help me identify what could be wrong?
 * The whole site seems to work fine but it’s annoying and clearly something that
   should be fixed.
    I’ve deactivated ALL plugins on my site but those errors still
   show when I go to the ‘add new’ page.
 * Thanks in advance

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Pieterjan Deneys](https://wordpress.org/support/users/nekojonez/)
 * (@nekojonez)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/add-new-plugin-errors/#post-16361444)
 * I’d go to updates and click the re-install WP button and try again. I had a similar
   error once and I was able to fix it that way.
    Also, which PHP version do you
   use? Since, that might influence things as well. I usually run at PHP8.0
 *  Thread Starter [robb1e](https://wordpress.org/support/users/robb1e/)
 * (@robb1e)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/add-new-plugin-errors/#post-16361474)
 * Hi Pieterjan,
 * Thanks for your reply.
 * I have just tried your suggestion to reinstall WP but unfortunately the errors
   are still there. The site is using PHP 8.0
 *  [Pieterjan Deneys](https://wordpress.org/support/users/nekojonez/)
 * (@nekojonez)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/add-new-plugin-errors/#post-16361506)
 * Sadly, then I’m a bit out of idea’s. But this link might help: [https://stackoverflow.com/questions/48443966/stdclass-wordpress-plugin-error](https://stackoverflow.com/questions/48443966/stdclass-wordpress-plugin-error)

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Add new plugin errors’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Pieterjan Deneys](https://wordpress.org/support/users/nekojonez/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/add-new-plugin-errors/#post-16361506)
 * Status: not resolved

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