Title: Issue with the WP Optimize Plugin
Last modified: December 31, 2022

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# Issue with the WP Optimize Plugin

 *  Resolved [MA](https://wordpress.org/support/users/maleathers/)
 * (@maleathers)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/issue-with-the-wp-optimize-plugin/)
 * I am getting error in accessing the WP optimize. I have turned on Debugger to
   see error.
 * **Fatal error**: Uncaught Error: Class “WP_Site_Query” not found in /home/u286256185/
   domains/maleathers.com/public_html/wp-includes/ms-site.php:424 Stack trace: #
   0 /home/u286256185/domains/maleathers.com/public_html/wp-content/plugins/wp-optimize/
   wp-optimize.php(1592): get_sites() #1 /home/u286256185/domains/maleathers.com/
   public_html/wp-content/plugins/wp-optimize/wp-optimize.php(892): WP_Optimize-
   >get_sites() #2 /home/u286256185/domains/maleathers.com/public_html/wp-content/
   plugins/wp-optimize/wp-optimize.php(379): WP_Optimize->wpo_js_translations() #
   3 /home/u286256185/domains/maleathers.com/public_html/wp-includes/class-wp-hook.
   php(308): WP_Optimize->admin_enqueue_scripts() #4 /home/u286256185/domains/maleathers.
   com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #
   5 /home/u286256185/domains/maleathers.com/public_html/wp-includes/plugin.php(
   517): WP_Hook->do_action() #6 /home/u286256185/domains/maleathers.com/public_html/
   wp-admin/admin-header.php(118): do_action() #7 /home/u286256185/domains/maleathers.
   com/public_html/wp-admin/admin.php(239): require_once(‘/home/u28625618…’) #8 {
   main} thrown in **/home/u286256185/domains/maleathers.com/public_html/wp-includes/
   ms-site.php** on line **424**
 * There has been a critical error on this website. Please check your site admin
   email inbox for instructions.

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [Venkat Raj](https://wordpress.org/support/users/webulous/)
 * (@webulous)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/issue-with-the-wp-optimize-plugin/#post-16334336)
 * [@maleathers](https://wordpress.org/support/users/maleathers/) Looks like an 
   incomplete WordPress update/installation.
 * `WP_Site_Query` is core class that comes with WordPress. Could you please try
   to reinstall/overwrite WP core files?

Viewing 1 replies (of 1 total)

The topic ‘Issue with the WP Optimize Plugin’ is closed to new replies.

 * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899)
 * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Venkat Raj](https://wordpress.org/support/users/webulous/)
 * Last activity: [3 years, 4 months ago](https://wordpress.org/support/topic/issue-with-the-wp-optimize-plugin/#post-16334336)
 * Status: resolved