Wordpress LScache Plugin: Issue with UCSS
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hello, I noticed that in my Quic cloud dashboard that there are more than 1000 request that is rejected and the status of my page optimization is Needs attention So when I checked the requests it was like the following [UCSS] https://sphereagency.com / null / 1s 08/03/2021 1- What is causing that issue and how to fix it? 2- I also noticed that there are ccss/ucss request made for pages that doesnt exist on my current website, some of these requests are rejected but some is not. Is it normal? How to fix? Thank you Hi, please navigate to menu toolbox -> report -> click send to LiteSpeed , and post the report number here. Regards, Lehan SVDJULQH Any updates? Hi, Sorry for the delay. I checked your log and found this error message: `UCSS generator error: uncss/node_modules/css: unable to parse undefined: :14:8 ` Since now you need v4.2+ to use UCSS, you can try upgrade to 4.2 see what happens. Regards, Lehan My LScache is v4.2 and now my site is broken due to the lack of ucss. the loaded css file is null. Please help! I had to turn off the ucss feature for the site to work properly atm. Please note that the ucss were generating null files since the beginning but the site have no issues with the loading. However I ran out of credit few days ago. But after refilling my credits on quic.cloud the site stopped loading properly. Hi, Did you purge all and purge all ? ccss after you upgrade to 4.2? Since the null result is already generated, you may need to purge the results and regenerate UCSS again. If purge and regenerate UCSS does not work, please create a ticket here: https://store.litespeedtech.com/store/submitticket.php , so we can investigate further for you. Regards, Lehan Thank you, I just upgrade the plugin to v4.3 and cleared the ccss/ucss but issue still there. Ill add the ticket as mentioned.
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