Title: Error After Updating WordPress 6
Last modified: June 4, 2022

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# Error After Updating WordPress 6

 *  [manpreetbhinder](https://wordpress.org/support/users/manpreetbhinder/)
 * (@manpreetbhinder)
 * [4 years ago](https://wordpress.org/support/topic/error-after-updating-wordpress-6/)
 * Yesterday I update my WordPress site to WordPress 6. Now when I try to open my
   website it shows an Uncaught Error. Below is the message I got when I open my
   website.
 * ”
    Fatal error: Uncaught Error: Class ‘WPO_Page_Cache’ not found in /home3/iosess9w/
   public_html/wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.
   php:813 Stack trace: #0 /home3/iosess9w/public_html/wp-content/plugins/wp-optimize/
   cache/file-based-page-cache-functions.php(889): wpo_get_conditional_tags_exceptions()#
   1 /home3/iosess9w/public_html/wp-content/plugins/wp-optimize/cache/file-based-
   page-cache.php(31): wpo_url_in_conditional_tags_exceptions() #2 /home3/iosess9w/
   public_html/wp-content/advanced-cache.php(58): include_once(‘/home3/iosess9w…’)#
   3 /home3/iosess9w/public_html/wp-settings.php(95): include(‘/home3/iosess9w…’)#
   4 /home3/iosess9w/public_html/wp-config.php(77): require_once(‘/home3/iosess9w…’)#
   5 /home3/iosess9w/public_html/wp-load.php(50): require_once(‘/home3/iosess9w…’)#
   6 /home3/iosess9w/public_html/wp-blog-header.php(13): require_once(‘/home3/iosess9w…’)#
   7 /home3/iosess9w/public_html/index.php(17): require(‘/home3/iosess9w…’) #8 {
   main} thrown in /home3/iosess9w/public_html/wp-content/plugins/wp-optimize/cache/
   file-based-page-cache-functions.php on line 813″
 * How can I solve this? I’m unable to log in to my WordPress account. Please Help
   me. Here is website link – [http://www.iosesolution.com](https://iosesolution.com/)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-after-updating-wordpress-6%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Moderator [threadi](https://wordpress.org/support/users/threadi/)
 * (@threadi)
 * [4 years ago](https://wordpress.org/support/topic/error-after-updating-wordpress-6/#post-15708155)
 * The error concerns the plugin WP Optimize. They had a buggy release recently,
   but that has already been corrected. You are not the only one who has this problem.
   Here is the answer from their support about it: [https://wordpress.org/support/topic/fatal-error-uncaught-error-class-wpo_page_cache/](https://wordpress.org/support/topic/fatal-error-uncaught-error-class-wpo_page_cache/)–
   if you have further questions, contact their support.

Viewing 1 replies (of 1 total)

The topic ‘Error After Updating WordPress 6’ is closed to new replies.

## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)
 * [plugin error](https://wordpress.org/support/topic-tag/plugin-error/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 4 participants
 * Last reply from: [threadi](https://wordpress.org/support/users/threadi/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/error-after-updating-wordpress-6/#post-15708155)
 * Status: not resolved

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