Title: Fatal PHP 8 error
Last modified: January 8, 2021

---

# Fatal PHP 8 error

 *  [Seath](https://wordpress.org/support/users/seath/)
 * (@seath)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-8-error/)
 * Just reporting what I am getting:
 *     ```
       Fatal error: Uncaught Error: Unknown named parameter $id in /home/seath/public_html/wp-includes/class-wp-hook.php:287
   
       Stack Trace
       1.	
       WP_Hook->apply_filters('', Array)
       /home/seath/public_html/wp-includes/class-wp-hook.php:311
       2.	
       WP_Hook->do_action(Array)
       /home/seath/public_html/wp-includes/plugin.php:551
       3.	
       do_action_ref_array('backwpup_cron', Array)
       /home/seath/public_html/wp-cron.php:138
       4.	
       {main}
       thrown in /home/seath/public_html/wp-includes/class-wp-hook.php on line 287
       ```
   

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Dion](https://wordpress.org/support/users/diondesigns/)
 * (@diondesigns)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-8-error/#post-13883770)
 * One or more of your plugins is not compatible with PHP 8.0. And WordPress itself
   is not yet fully compatible with PHP 8.0. And PHP 8.0 has some issues that (IMO)
   need to be resolved before it should be used on a production server.
 * I strongly suggest that you revert to PHP 7.4.
 *  Thread Starter [Seath](https://wordpress.org/support/users/seath/)
 * (@seath)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-8-error/#post-13883775)
 * That is my test site so its ok.
    Thanks for the reply.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal PHP 8 error’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [Seath](https://wordpress.org/support/users/seath/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-8-error/#post-13883775)
 * Status: not resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics