Wordpress LScache Plugin: Displaying Thumbnails problem
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hi! Ive been using this plugin for a while and you guys did an amazing job with it! It works awesome. There is a single problem I encountered with it. The Thumbnails are randomly not displayed and it differs from browser to browser. I suppose its a cache problem as I didnt encounter this problem while using Wp Total Cache and only appear since switching to Litespeed Cache. I tried from different PCs and different browsers and random Thumbnails are not being displayed. Ex 1: How the same Thumbnails are being displayed on Google Chrome and Firefox Random thumbnail not being displayed on Google Chrome https://i.imgur.com/tMHOPto.jpg Same thumbnail being displayed just fine on Firefox https://i.imgur.com/Bn6p5Y7.jpg Ex 2: Another thumbnail that this time is being displayed on Google Chrome https://i.imgur.com/Hs2DX6Q.jpg but not being displayed on Firefox instead https://i.imgur.com/7HCySLY.jpg What could be done? =/ Hi @forprofile, could you please provide?the Report Number and let us know the broken images are on which page? Hi! I tried to get the Report Number, but it turns out an error. https://i.imgur.com/n2hEN4d.jpg Please update your plugin to latest version. Thanks. Hi! Thank you for your reply! I updated the plugin to the latest version. Report number: EVBFDRCK We found some of the thumbnails didnt generate correctly, for example: /wp-content/uploads/2019/04/red-velvet-the-red-summer-review-300x168.jpg /wp-content/uploads/2019/04/red-velvet-the-red-summer-review-285x160.jpg /wp-content/uploads/2019/04/red-velvet-the-red-summer-review-900x506.jpg so when you using a different browser it might show the broken one which makes the displaying thumbnails problem. May I know have you installed any plugin for the thumbnail generation? Thanks a lot for the reply! We had installed Smush for image optimization and once we re-generated the thumbnails while using it. We didnt notice anything weird after that though. But that plugin is Deactivated from a long time. Could it still cause new thumbnails problem even if it is deactivated? Is it this problem occurred after plugin deactivated? And I found the posts thumbnail working normally now. Yes, that plugin was deactivated since early 2018. Back then we were on Apache, Centos, with cache by Wp Total Cache. The thumbnails were shown normally until February 2019, when we moved to Litespeed with Litespeed cache. But what is strange is that the thumbnails are shown differently from browser to browser. While on a browser a thumbnail is shown as broken on a different browser the same thumbnail is shown as working fine. The problem is still there unfortunately. How the thumbnails are displayed on Google Chrome: https://i.imgur.com/Hi6FKmg.jpg How the thumbnails are displayed on FireFox: https://i.imgur.com/bRV6WlL.jpg Also, we noticed that if the server is down for a second, that error will be shown for a few hours. Visitors will see the page they were on while the error occurred, as broken for many hours, while they can browse the rest of the site normally. Could you check your PHP error log to see if there any error related to those image files or timeout issue? If you are not sure about it, you can send us the error log for checking. Thanks. And for We noticed that if the server is down for a second, that error will be shown for a few hours which error did you see? Could you describe more about it? Thank you for your answer! We also noticed that when you click on a thumbnail image that isnt displayed correctly and try to open that image in a new tab, the image URL seems correct but it directs to a random page URL instead not to an image url. https://i.imgur.com/siQXHu7.png https://i.imgur.com/794iJWo.jpg This happens randomly on a browser while it works correctly on a different browser. It acts really strange. Here is the error log: https://mega.nz/#!xUZTyQTa!nr0824fDBoNoN7mpZK0oAUe8hVWe-kUzKr7Ek_LN-GQ The error I was talking about is the typical 502 error that is shown when the server goes down: https://i.imgur.com/HjnoZnQ.png If the server goes down for like 2 seconds and a user is browsing a certain page that time, that error will be automatically cached and served to the user for a few hours (usually until we manually empty the entire cache). Hi, could you please join our Slack channel or submit a ticket here for helping us to reproduce the bug, thanks! Sorry for the late reply, we reinstalled Ubuntu and Litespeed, deactivated the plugins that werent needed and re-uploaded the thumbnails with problems. For now everything seems back to normal! Thanks a lot for your guidance!
LiteCache Rush: Speed comes from using less, not from doing it faster
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