Title: Internal Server Error (Woocommerce)
Last modified: August 31, 2016

---

# Internal Server Error (Woocommerce)

 *  Resolved [pvzwehl](https://wordpress.org/support/users/pvzwehl/)
 * (@pvzwehl)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/internal-server-error-woocommerce/)
 * Hallo Till,
 * first thank you for this great plugin!
 * Now the issue: When using Woocommerce at the checkout your plugin generates a
   500:
 * 2016/05/09 08:35:45 [error] 1735#1735: *3305 FastCGI sent in stderr: “PHP message:
   PHP Fatal error: Call to undefined function request_filesystem_credentials() 
   in /var/www/site/html/wp-content/plugins/nginx-cache/nginx-cache.php on line 
   250” while reading response header from upstream, client: 93.234.177.158, server:
   wsrm-academy.de, request: “POST /kasse/?wc-ajax=checkout HTTP/1.1”, upstream:“
   fastcgi://unix:/var/run/php5-fpm.sock:”, host: “www.wsrm-academy.de”, referrer:“
   [https://www.wsrm-academy.de/kasse/&#8221](https://www.wsrm-academy.de/kasse/&#8221);
 * Any suggestion?
 * [https://wordpress.org/plugins/nginx-cache/](https://wordpress.org/plugins/nginx-cache/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/)
 * (@tillkruess)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/internal-server-error-woocommerce/#post-7362323)
 * I’ll release a fix for this today.
 * You can find a solution here: [https://wordpress.org/support/topic/comment-turn-to-wp-comments-postphp-blank-page?replies=15](https://wordpress.org/support/topic/comment-turn-to-wp-comments-postphp-blank-page?replies=15)

Viewing 1 replies (of 1 total)

The topic ‘Internal Server Error (Woocommerce)’ is closed to new replies.

 * ![](https://ps.w.org/nginx-cache/assets/icon-256x256.jpg?rev=1029092)
 * [Nginx Cache](https://wordpress.org/plugins/nginx-cache/)
 * [Support Threads](https://wordpress.org/support/plugin/nginx-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/nginx-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/nginx-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/nginx-cache/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Till Krüss](https://wordpress.org/support/users/tillkruess/)
 * Last activity: [10 years, 1 month ago](https://wordpress.org/support/topic/internal-server-error-woocommerce/#post-7362323)
 * Status: resolved