Title: Cache Controlle Error
Last modified: January 13, 2023

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# Cache Controlle Error

 *  Resolved [jumaron](https://wordpress.org/support/users/jumaron/)
 * (@jumaron)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/)
 * Hello, when i looked up the WP Debug Error Logs i saw following error:
 * `[13-Jan-2023 17:13:15 UTC] Cron unschedule event error for hook: wp_swcfpc_cache_preloader_background_process_cron,
   Error code: could_not_set, Error message: The cron event list could not be saved.,
   Data: {"schedule":"wp_swcfpc_cache_preloader_background_process_cron_interval","
   args":[],"interval":300}`
 * `
   [13-Jan-2023 17:14:56 UTC] PHP Warning: Undefined array key 3 in /home/websitename/
   htdocs/websitename.com/wp-content/plugins/wp-cloudflare-page-cache/libs/cache_controller.
   class.php on line 2689[13-Jan-2023 17:14:56 UTC] PHP Warning: Undefined array
   key 3 in /home/websitename/htdocs/websitename.com/wp-content/plugins/wp-cloudflare-
   page-cache/libs/cache_controller.class.php on line 2690
 * I use php version 8.1 if this is the cause, i really love your Plugin and i wonder
   if this Warning can just be ignored.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Thread Starter [jumaron](https://wordpress.org/support/users/jumaron/)
 * (@jumaron)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/#post-16371168)
 * I also get this error: `[13-Jan-2023 17:13:15 UTC] PHP Warning: file_get_contents(/
   home/websitename/htdocs/websitename/wp-content/wp-cloudflare-super-page-cache/
   upanimes.com/purge_cache_queue/cache_queue.json): Failed to open stream: No such
   file or directory in /home/websitename/htdocs/websitename/wp-content/plugins/
   wp-cloudflare-page-cache/libs/cache_controller.class.php on line 2639`
    -  This reply was modified 3 years, 2 months ago by [jumaron](https://wordpress.org/support/users/jumaron/).
 *  Plugin Contributor [iSaumya](https://wordpress.org/support/users/isaumya/)
 * (@isaumya)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/#post-16376138)
 * Hi [@jumaron](https://wordpress.org/support/users/jumaron/),
   This seems super
   wired. Can you please check/do the following?
    1. Make sure you are using the latest version of the plugin.
    2. Inside the plugin settings page first Disable Cache and then Enable Cache
 * This should resolve your issue. Moreover I must state that, it is not much benefitial
   to run the preloader at this point of time. As Cloudflare systems have evolved
   a lot and now they mostly cache contents when the request comes from a real browser.
 * Compared to that the preloader used cURL to make the requests which takes a bit
   of server resource. That is why I mostly recommend people to keep it disabled.
 *  Thread Starter [jumaron](https://wordpress.org/support/users/jumaron/)
 * (@jumaron)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/#post-16379371)
 * Thanks for the answer,
   i updated php to 8.2 and it somehow fixed all errors, 
   so i guess it is all good now 🙂Thanks for the help your Plugin is most likely
   the best for performance on the plugin market, keep going!
 *  Plugin Contributor [iSaumya](https://wordpress.org/support/users/isaumya/)
 * (@isaumya)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/#post-16380123)
 * Hi [@jumaron](https://wordpress.org/support/users/jumaron/),
   I’m so happy to 
   hear that. If you love using the plugin, please consider sharing a review.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Cache Controlle Error’ is closed to new replies.

 * ![](https://ps.w.org/wp-cloudflare-page-cache/assets/icon-256x256.gif?rev=3234997)
 * [Super Page Cache](https://wordpress.org/plugins/wp-cloudflare-page-cache/)
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 * 4 replies
 * 2 participants
 * Last reply from: [iSaumya](https://wordpress.org/support/users/isaumya/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/cache-controlle-error/#post-16380123)
 * Status: resolved