Title: Error 500
Last modified: January 23, 2023

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# Error 500

 *  Resolved [PumpaXXL](https://wordpress.org/support/users/pumpaxxl/)
 * (@pumpaxxl)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/)
 * Hi, the define(‘WPFC_CACHE_QUERYSTRING’, true); in the first line of wp-config.
   php causes ERROR 500 on the site.

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16401206)
 * you need to add the following line after **<?php** which exists at the top of**
   wp-config.php** file.
 *  Thread Starter [PumpaXXL](https://wordpress.org/support/users/pumpaxxl/)
 * (@pumpaxxl)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16402613)
 * Yes, that is what I am doing.
 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16402852)
 * please use the following line. the quotes in your line are wrong.
   `define('WPFC_CACHE_QUERYSTRING',
   true);`
 *  Thread Starter [PumpaXXL](https://wordpress.org/support/users/pumpaxxl/)
 * (@pumpaxxl)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16402890)
 * This is the one I use – please see my first post here. 
   Let’s drop this for now.
   I wanted the WPFC to serve cached pages for requests with Google url params and
   I found that the plugin doest that without any further settings.
 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16402900)
 * Please listen to my advise.
   This is your code. and the quotes in your line are
   wrong.`define(‘WPFC_CACHE_QUERYSTRING’, true);`This is my code. This is correct.
   Try it please.`define('WPFC_CACHE_QUERYSTRING', true);`
 *  Thread Starter [PumpaXXL](https://wordpress.org/support/users/pumpaxxl/)
 * (@pumpaxxl)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16402957)
 * OMG, you are right! I will be more carefull about copy / paste next time. 
   Thanks!
 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16403082)
 * you are welcome

Viewing 7 replies - 1 through 7 (of 7 total)

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

 * ![](https://ps.w.org/wp-fastest-cache/assets/icon-256x256.png?rev=2064586)
 * [WP Fastest Cache - WordPress Cache Plugin](https://wordpress.org/plugins/wp-fastest-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-fastest-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-fastest-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-fastest-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-fastest-cache/unresolved/)
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 * 7 replies
 * 2 participants
 * Last reply from: [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/error-500-231/#post-16403082)
 * Status: resolved