Title: Critical CSS Error Last modified: June 8, 2019 --- # Critical CSS Error * Resolved [andyt1980](https://wordpress.org/support/users/andyt1980/) * (@andyt1980) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/) * Hi, I keep seeing the following error message at the top of my WordPress Dashboard:‘ failed to post via WordPress: Our Critical CSS server is under heavy memory load and cannot process your request. Please try again later.’ I can’t try again later because the Purge All – Critical CSS option is no longer available under the menu. Its been saying that for the past 24hrs, any ideas what’s happening here? Viewing 13 replies - 1 through 13 (of 13 total) * [stanley@litespeed](https://wordpress.org/support/users/stanleylitespeed/) * (@stanleylitespeed) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618508) * Hi [@andyt1980](https://wordpress.org/support/users/andyt1980/), could you please provide your [Report Number](https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:environment-report)? * Thread Starter [andyt1980](https://wordpress.org/support/users/andyt1980/) * (@andyt1980) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618520) * Report No.: IVMBYNFP * I recently setup BuddyCDN, so perhaps that may be the cause? - This reply was modified 7 years, 3 months ago by [andyt1980](https://wordpress.org/support/users/andyt1980/). * [stanley@litespeed](https://wordpress.org/support/users/stanleylitespeed/) * (@stanleylitespeed) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618548) * Can you try to turn `Load CSS Asynchronously` ON, `Generate Critical CSS In Background` OFF, purge a page cache and reload again to see it there any CCSS generated? * Thread Starter [andyt1980](https://wordpress.org/support/users/andyt1980/) * (@andyt1980) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618566) * Load CSS Asynchronously is actually already ON and Generate Critical CSS In Background is already OFF? * [stanley@litespeed](https://wordpress.org/support/users/stanleylitespeed/) * (@stanleylitespeed) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618598) * Are you still not able to see the Purge All – Critical CSS option now? If yes, could you please [join our Slack channel](https://goo.gl/FG9S4N) or [submit a ticket here](https://store.litespeedtech.com/store/submitticket.php) for helping us to reproduce the bug, thanks! * Thread Starter [andyt1980](https://wordpress.org/support/users/andyt1980/) * (@andyt1980) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618601) * Purge All – Critical CSS option is still not available, I’m already in your slack channel. * [stanley@litespeed](https://wordpress.org/support/users/stanleylitespeed/) * (@stanleylitespeed) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11618603) * Thanks, [@andyt1980](https://wordpress.org/support/users/andyt1980/), you may send a direct message to me [@stanley](https://wordpress.org/support/users/stanley/) Cheung at LiteSpeed * [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/) * (@wohnhirsch) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11622609) * any update on that matter? * as it seems I have the same issue. last time critical css was generated was on the 4th of June. since ever then nothing happens anymore and when i try tu run the queue manually * i get this message: Failed to post via WordPress: Our Critical CSS server is under heavy memory load and cannot process your request. Please try again later. * cheers, Markus - This reply was modified 7 years, 3 months ago by [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/). * Thread Starter [andyt1980](https://wordpress.org/support/users/andyt1980/) * (@andyt1980) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11622625) * I’ve been told someone should be looking at this today, as you have the same issue it does appear to be a problem with their server. * [stanley@litespeed](https://wordpress.org/support/users/stanleylitespeed/) * (@stanleylitespeed) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11623564) * Hi all, CCSS service back to normal now, please try again. * [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/) * (@wohnhirsch) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11625359) * Morning Stanley, * just tried on my dev site – no change, CCSS is still not available. I still see: * Failed to post via WordPress: Our Critical CSS server is under heavy memory load and cannot process your request. Please try again later. * cheers, Markus * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11626830) * We upgraded the EU CCSS server memory to 16GB. Please try now. We were encountering a large volume requests at that moment. Thanks for your report. * [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/) * (@wohnhirsch) * [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11629181) * Morning, * seems to work again – thx! * cheers, Markus - This reply was modified 7 years, 3 months ago by [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/). Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘Critical CSS Error’ is closed to new replies. * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181) * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/) * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/) * 13 replies * 4 participants * Last reply from: [wohnhirsch](https://wordpress.org/support/users/wohnhirsch/) * Last activity: [7 years, 3 months ago](https://wordpress.org/support/topic/critical-css-error/#post-11629181) * Status: resolved