Wordpress LScache Plugin: 404 Error with CSS
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hi, I am currently experiencing CSS loading issues with the Litespeed Cache plugin. It seems to have cached the path to a specific CSS file (combined CSS file) which doesnt exist anymore. In the browser console (Firefox & Chrome) it gives me a 404 error for the CSS file. As per your documentation (https://docs.litespeedtech.com/lscache/lscwp/ts-optimize/), Ive appended /?LSCWP_CTRL=before_optm to the website URL and then the website loads as intended. When I then purge the cache the website loads again like normal. Here are screenshots of the website and browser console: Browser Console: https://imgur.com/a/6RsPvyr Website: https://imgur.com/a/ME7C30z Ive submitted a report to Litespeed. Here is the report number: Report number: RJLFNJHL Your assistance in this matter is greatly appreciated. This topic was modified 1 year, 3 months ago by michaelsmartmove. Hi, please: download https://www.litespeedshare.net/2021/08/92db40-debug.zip this package contains 3 modified files with more debug log enabled , for v4.3 only. please replace them into /wp-content/plugins/litespeed-cache/src/ to override exsiting files now edit wp-config.php find line define(WP_DEBUG, false) add in front it to comment it out , then add define(WP_DEBUG, true) define(WP_DEBUG_LOG, true) define(WP_DEBUG_DISPLAY,false) after it and then go to wp-admin -> LSCWP -> toolbox -> debug setting set debug log to admin IP only and add your IP in below box in Debug URI Excludes field ,add admin ajax into it , save and purge all and then wait for it happens again once it happens , please send /wp-content/debug.log and PHP error log (typically located /public_html/error_log on cPanel) to support at litespeedtech.com with reference link to this topic after that, please undo the change in the wp-config.php ??? if you want to get old version , you can get the files here https://wordpress.org/plugins/litespeed-cache/advanced/ , at bottom of the page, you can choose the version , but it is not recommended to downgrade Best regards, thanks , we will be waiting for you @CacheCrawler Thanks a lot for confirming that the isse exists and that it is being worked on. I just wanted to find out, if you still need me to send the debug.log and error_log to Litespeed Support? Do you maybe an estimate on when we can expect an update, as I have quite a few clients that run on Litespeed Hi, thanks, if you have them or can generate them , then it is great , and please send to support at litespeedtech.com with reference link to this topic we have some idea about it already and are working on it , I dont really have a timing for it right now , but I certainly want it to happen as soon as possible Best regards, Hi, there is a patch for combined files 404 error in v4.4-rc4 , please upgrade to it and see how it goes you can get it in toolbox -> beta test -> click dev and upgrade Best regards, Hi @CacheCrawler, Thanks a lot for letting me know about the patch. I will implement it on the websites and will let you know what it does. @CacheCrawler Yesterday Ive updated all my WordPress websites, as there was a update notification for LiteSpeed Cache 4.4 and then I also adjusted the LiteSpeed settings to what I need them to be. This morning the websites started to break again. Ive send an email to LiteSpeed support with the Report number and a link to this thread. if you still have that issue, please submit a ticket to our system , we will investigate it further https://store.litespeedtech.com/store/submitticket.php Best regards, @CacheCrawler I am already in contact with your support team. Hopefully we can sort it out. This is fixed in v4.4 version. Latest beta test both dev and master are v4.4 already. Please try this version which will get released tomorrow. Hi @CacheCrawler @hailite I updated the plugin to 4.4. After 1 hour it broke again. The Js was giving a 404 error. Please checkThank YouHi, for whom still have issue with v4.4 please create a ticket in our system , we will investigate it further. Best regards, @rayken & all Hai just gave it a fix in the latest dev version v4.4.1-a1. If possible please give it a try to see with this new version if you will encounter the 404 again. Please remember to Purge All and Purge All ? CSS/JS Cache after upgrading just to double confirm and make sure we start from a clean point. @michaelsmartmove For your site and server please do not upgrade to this one at this moment. Tomorrow I will update the debugging code accordingly and deploy to yours for continuous monitoring. Best regards, Abe If you are not the person who started this topic and if you need support then per the forum guidelines please start your own topic. https://wordpress.org/support/forum-user-guide/faq/#i-have-the-same-problem-can-i-just-reply-to-someone-elses-post-with-me-too You can do so here. https://wordpress.org/support/plugin/litespeed-cache/ I have archived many replies as this topic ran out of control and was no longer helping the original poster who reported the problem. Start your own topics, thats how the forums work here. If that does not work for you then use the link the developer provided and consider submitting a ticket on their site instead.
LiteCache Rush: Speed comes from using less, not from doing it faster
Reference