Title: error 500
Last modified: February 3, 2020

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# error 500

 *  [chezares](https://wordpress.org/support/users/chezares/)
 * (@chezares)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/error-500-154/)
 * Good day.
    I have a problem when turning it on, namely CSS code optimization 
   gives an error of 500. This problem exists only if I am under the admin panel
   and the top panel is turned on when viewing in the settings. If you need more
   information, I will send it. Thanks in advance
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-500-154%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/error-500-154/#post-12395133)
 * hi [@chezares](https://wordpress.org/support/users/chezares/) ;
 * Not entirely sure I understand; does the server error occur when in the backend(
   under `/wp-admin/`)? If so; what is the top-panel you’re referring to? Can you
   share a screenshot?
 * Additionally;
    * do you have any other CSS optimizers active? can you disable
   those? * does the problem persist if you disable “aggregate CSS”? * does the 
   problem persist if you disable “also aggregate inline CSS”? * can you check the
   PHP errorlog for relevant errors?
 * frank
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/error-500-154/#post-12442859)
 * Any news on this [@chezares](https://wordpress.org/support/users/chezares/) ?

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

The topic ‘error 500’ is closed to new replies.

 * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608)
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 * 2 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/error-500-154/#post-12442859)
 * Status: not resolved