Title: Version 6.15 causing 504 timeouts Last modified: September 10, 2025 --- # Version 6.15 causing 504 timeouts * Resolved [joanneburek](https://wordpress.org/support/users/joanneburek/) * (@joanneburek) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/) * Upon moving to version 6.15.1, my website slowed down completely and I was consistently getting 504 Gateway errors. Then I restored version 6.14.2 and performance was great again. Today I tried 6.15.2 and performance was just as bad as 6.15.1. * My PHP is 8.4. I do have a high number of calendar events, about 150, if that matters. I don’t use a website builder. The other major plugin is Woocommerce. * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fversion-6-15-causing-504-timeouts%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Support [tristan083](https://wordpress.org/support/users/tristan083/) * (@tristan083) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18635315) * Hi [@joanneburek](https://wordpress.org/support/users/joanneburek/) , * Thank you for reaching out. * To help us better understand the situation and help in the investigation, could you provide the version of the following? 1. PHP 2. WordPress 3. Events Calendar Pro (if using) 4. Event Tickets (if using) 5. Event Tickets Plus (if using) 6. Theme and Version * Could you also share the pages (i.e., admin dashboard -> events list, front-end- > events archive) where performance degradation is apparent? * Thread Starter [joanneburek](https://wordpress.org/support/users/joanneburek/) * (@joanneburek) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18636090) * PHP is 8.4 WordPress is 6.8.2Using only the free version of The Events Calendar, not ProNot using Event Tickets or Event Tickets PlusTheme is GeneratePress, 3.6.0 * The performance degradation is on all pages—home page (even in private window), admin screens—everywhere. * [galeassim](https://wordpress.org/support/users/galeassim/) * (@galeassim) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18636613) * We’re seeing the same thing since upgrading to 6.15. * Theme: Hello / Elementor * Plugin Support [Darian](https://wordpress.org/support/users/d0153/) * (@d0153) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18637524) * Hi [@joanneburek](https://wordpress.org/support/users/joanneburek/) [@galeassim](https://wordpress.org/support/users/galeassim/) * Thanks for your message. Toniq has shared a workaround that may help with the issue you’re experiencing. Could you please try the recommendations in this [thread](https://wordpress.org/support/topic/6-15-1-is-crushing-server-ram-causing-503s/#post-18636612) and see if it makes a difference on your end? As always, we suggest testing it on your [staging site](https://theeventscalendar.com/knowledgebase/creating-and-using-a-wordpress-staging-site/) first before applying it to your live site. * If the workaround doesn’t resolve the issue, could you share any relevant server logs (such as error logs or database logs) from when the issue occurs? That information would be very helpful for our investigation. * Rest assured, our team is aware of the problem and we’ll keep you updated as soon as more details become available. * Thread Starter [joanneburek](https://wordpress.org/support/users/joanneburek/) * (@joanneburek) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18639160) * The recommendation to empty the shepherd table in the database worked immediately. Thank you! * Plugin Support [Darian](https://wordpress.org/support/users/d0153/) * (@d0153) * [9 months ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18642244) * Hi [@joanneburek](https://wordpress.org/support/users/joanneburek/) * I’m happy to hear that the workaround is helping on your end! I want to assure you that our team is aware of this issue, and it’s currently being tracked under our internal bug ticket [TCMN-193]. * While I don’t have a specific timeline for when this will be resolved, please know that our team is actively working on it. We share updates and bug fixes through our [newsletter](https://theeventscalendar.com/newsletter-signup/) and [changelog](https://theeventscalendar.com/category/release-notes/), and we’ll also update you directly in this thread as soon as a fix becomes available. * If you have any more questions or need further assistance, please let me know. * — * Internal Bug Ticket Reference: TCMN-193 * [kevinbi](https://wordpress.org/support/users/kevinbi/) * (@kevinbi) * [8 months, 3 weeks ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18647525) * [@d0153](https://wordpress.org/support/users/d0153/) checking to see if you have any updates on this – the plugin is disabled on our site due to this issue and we’d like to get back to selling tickets asap. * Moderator [tobifjellner (Tor-Bjorn “Tobi” Fjellner)](https://wordpress.org/support/users/tobifjellner/) * (@tobifjellner) * [8 months, 3 weeks ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18647604) * [@kevinbi](https://wordpress.org/support/users/kevinbi/) Please [start a new topic](https://wordpress.org/support/plugin/the-events-calendar/?view=all#new-topic-0) instead. You can safely link to this topic for reference, but avoid piling onto this topic, since you’re not trying to help the original poster. Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Version 6.15 causing 504 timeouts’ is closed to new replies. * ![](https://ps.w.org/the-events-calendar/assets/icon-256x256.gif?rev=2516440) * [The Events Calendar](https://wordpress.org/plugins/the-events-calendar/) * [Frequently Asked Questions](https://wordpress.org/plugins/the-events-calendar/#faq) * [Support Threads](https://wordpress.org/support/plugin/the-events-calendar/) * [Active Topics](https://wordpress.org/support/plugin/the-events-calendar/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/the-events-calendar/unresolved/) * [Reviews](https://wordpress.org/support/plugin/the-events-calendar/reviews/) * 8 replies * 6 participants * Last reply from: [tobifjellner (Tor-Bjorn “Tobi” Fjellner)](https://wordpress.org/support/users/tobifjellner/) * Last activity: [8 months, 3 weeks ago](https://wordpress.org/support/topic/version-6-15-causing-504-timeouts/#post-18647604) * Status: resolved