Title: Plesk Error
Last modified: May 18, 2025

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# Plesk Error

 *  Resolved [DickRaney](https://wordpress.org/support/users/dickraney/)
 * (@dickraney)
 * [11 months, 3 weeks ago](https://wordpress.org/support/topic/plesk-error/)
 * I am working on a server with Plesk panel and when I go try to go to WP Opcache,
   I just get a server error.
 *     ```wp-block-code
       2791529#0: *9839368 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Call to undefined function opcache_get_status() in /var/www/vhosts/awts.com/httpdocs/wp-content/plugins/flush-opcache/admin/class-flush-opcache-admin.php:93Stack trace:#0 /var/www/vhosts/awts.com/httpdocs/wp-includes/class-wp-hook.php(324): Flush_Opcache_Admin->flush_opcache_admin_page()#1 /var/www/vhosts/awts.com/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()#2 /var/www/vhosts/awts.com/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action()#3 /var/www/vhosts/awts.com/httpdocs/wp-admin/admin.php(260): do_action()#4 /var/www/vhosts/awts.com/httpdocs/wp-admin/tools.php(40): require_once('...')#5 {main}thrown in /var/www/vhosts/awts.com/httpdocs/wp-content/plugins/flush-opcache/admin/class-flush-opcache-admin.php on line 93" while reading response header from upstream
       ```
   
 * Here are the opcache settings:
 * ![](https://i0.wp.com/snipboard.io/vpFNtT.jpg?ssl=1)

Viewing 1 replies (of 1 total)

 *  Plugin Author [nierdz](https://wordpress.org/support/users/mnttech/)
 * (@mnttech)
 * [11 months, 3 weeks ago](https://wordpress.org/support/topic/plesk-error/#post-18471918)
 * As you screenshot shows it, `opcache_get_status()` is disabled so the plugin 
   can not work. You need to allow this function and it will be OK.

Viewing 1 replies (of 1 total)

The topic ‘Plesk Error’ is closed to new replies.

 * ![](https://ps.w.org/flush-opcache/assets/icon-256x256.jpg?rev=1716642)
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 * 1 reply
 * 2 participants
 * Last reply from: [nierdz](https://wordpress.org/support/users/mnttech/)
 * Last activity: [11 months, 3 weeks ago](https://wordpress.org/support/topic/plesk-error/#post-18471918)
 * Status: resolved