Title: plugin error Last modified: May 21, 2026 --- # plugin error * Resolved [hganev](https://wordpress.org/support/users/hganev/) * (@hganev) * [1 week, 1 day ago](https://wordpress.org/support/topic/plugin-error-240/) * Hello, * after updating the plugin to the latest version 5.3.1 I got this error at the bottom of every page: * **Fatal error**: Uncaught Error: Call to undefined method SW_CLOUDFLARE_PAGECACHE:: get_single_config() in /home/guestfriendl/public_html/wp-content/advanced-cache. php:177 Stack trace: #0 [internal function]: swcfpc_fallback_cache_end(‘…’, 9) #1 /home/guestfriendl/public_html/wp-includes/functions.php(5481): ob_end_flush() #2 /home/guestfriendl/public_html/wp-includes/class-wp-hook.php( 341): wp_ob_end_flush_all(”) #3 /home/guestfriendl/public_html/wp-includes/class- wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #4 /home/guestfriendl/public_html/ wp-includes/plugin.php(522): WP_Hook->do_action(Array) #5 /home/guestfriendl/ public_html/wp-includes/load.php(1308): do_action(‘shutdown’) #6 [internal function]: shutdown_action_hook() #7 {main} thrown in **/home/guestfriendl/public_html/wp- content/advanced-cache.php** on line **177** Viewing 3 replies - 1 through 3 (of 3 total) * Plugin Support [Poonam Namdev](https://wordpress.org/support/users/poonam9/) * (@poonam9) * [1 week ago](https://wordpress.org/support/topic/plugin-error-240/#post-18916284) * Hi [@hganev](https://wordpress.org/support/users/hganev/), * Thanks for reporting this! The issue is caused by a **stale `advanced-cache.php` file** in your `wp-content/` folder. It’s an old version from before the 5.3.1 update that references a method that no longer exists. * To fix it, please try one of the following: 1. **Deactivate and reactivate the plugin** — this will automatically replace the old file with the new version. 2. **Or**, go to the Super Page Cache > settings, disable the  Disk Page Cache, save, then re-enable it and save again. * Either of those should resolve the fatal error right away. Let us know if you need any further help! * Thread Starter [hganev](https://wordpress.org/support/users/hganev/) * (@hganev) * [1 week ago](https://wordpress.org/support/topic/plugin-error-240/#post-18916297) * Hello, * it worked with the second option. Thanks a lot! * Plugin Support [Kush](https://wordpress.org/support/users/kushnamdev/) * (@kushnamdev) * [1 week ago](https://wordpress.org/support/topic/plugin-error-240/#post-18916439) * Hi [@hganev](https://wordpress.org/support/users/hganev/), * Thanks for the update — I’m glad to hear the second option worked. * This was caused by a stale `advanced-cache.php` file in `wp-content/` after the 5.3.1 update. Re-saving the **Disk Page Cache** setting forces the plugin to regenerate that file, which is why the fatal error disappeared. * Thanks again for confirming the fix. Viewing 3 replies - 1 through 3 (of 3 total) You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-error-240%2F%3Foutput_format%3Dmd&locale=en_US) to reply to this topic. * ![](https://ps.w.org/wp-cloudflare-page-cache/assets/icon-256x256.gif?rev=3234997) * [Super Page Cache – Cloudflare Cache, Page Speed & Core Web Vitals](https://wordpress.org/plugins/wp-cloudflare-page-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-cloudflare-page-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/) * [Active Topics](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/reviews/) * 3 replies * 3 participants * Last reply from: [Kush](https://wordpress.org/support/users/kushnamdev/) * Last activity: [1 week ago](https://wordpress.org/support/topic/plugin-error-240/#post-18916439) * Status: resolved