Title: Admin Backend slow / PHP Error
Last modified: August 22, 2016

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# Admin Backend slow / PHP Error

 *  Resolved [sally](https://wordpress.org/support/users/sallyruchman/)
 * (@sallyruchman)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/admin-backend-slow-php-error/)
 * Hello,
 * i have installed EWW on my managed server. I optimised the pictures, this worked
   fine. But after the Admin Dashboard is really slow, so i disabled / deinstalled
   EWW. I still get this PHP Error logged.
 * [22-Mar-2015 11:43:20] WordPress database error You have an error in your SQL
   syntax; check the manual that corresponds to your MySQL server version for the
   right syntax to use near ‘-298’ at line 1 for query SELECT orig_size-image_size
   FROM vo97zs2z9v_ewwwio_images LIMIT 4000, -298 made by do_action(‘wp_ajax_ewww_savings_loop’),
   call_user_func_array, ewww_image_optimizer_savings_loop, W3_Db->query, W3_DbCache-
   >query, W3_DbCallUnderlying->query, W3_Db->query, W3_DbProcessor->query, W3_Db-
   >default_query
    [22-Mar-2015 11:53:40] WordPress database error You have an error
   in your SQL syntax; check the manual that corresponds to your MySQL server version
   for the right syntax to use near ‘-298’ at line 1 for query SELECT orig_size-
   image_size FROM vo97zs2z9v_ewwwio_images LIMIT 4000, -298
 * How can i fix this???
 * Thx
 * [https://wordpress.org/plugins/ewww-image-optimizer/](https://wordpress.org/plugins/ewww-image-optimizer/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/admin-backend-slow-php-error/#post-5927779)
 * This bug will be fixed in the next version of EWWW, but that only runs on the
   EWWW IO settings page, so it has nothing to do with the slow-downs.

Viewing 1 replies (of 1 total)

The topic ‘Admin Backend slow / PHP Error’ is closed to new replies.

 * ![](https://ps.w.org/ewww-image-optimizer/assets/icon-256x256.png?rev=1582276)
 * [EWWW Image Optimizer](https://wordpress.org/plugins/ewww-image-optimizer/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/ewww-image-optimizer/#faq)
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## Tags

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

 * 1 reply
 * 2 participants
 * Last reply from: [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * Last activity: [11 years, 2 months ago](https://wordpress.org/support/topic/admin-backend-slow-php-error/#post-5927779)
 * Status: resolved