Wordpress LScache Plugin: Whitescreen on removal in mu-folder
Last Updated on: Wed, 15 Apr 2026 00:00:02 Someone saw this plugin, then somehow decided to put it in the mu-folder of the installation. I asked if they were using LightSpeed services, and duh! they were not. So, via FTP, we deleted the plugin. Upon deletion though, it causes the site to become completely unresponsive and simply yields a blank page. Like the genius that I am, I tried to recreate the problem on my site, so I did the same thing hoping that I could find out and discover why via the error logs or something similar. Turns out, even the error log doesnt yield any info. Yet still, simply removing the plugin causes a completely blank page. Any suggestions? https://wordpress.org/plugins/litespeed-cache/ Hi Brad, I tested using the following procedure: 1. In an Apache WordPress installation, install the plugin via WP Admin Panel. 2. Move the plugin to the mu directory. 3. Refreshed the admin page, confirm that it is on 4. Check out the front page, confirm that it is still working. 5. Delete the plugin. For mu plugins, the loading file must be in the mu-plugins directory, not a sub directory. Once moved, I found that if the require-once path was not fixed, it resulted in a white blank screen on the front page. If the litespeed-cache directory was deleted, but the litespeed-cache.php file was not, it also resulted in a white blank screen (likely meaning require-once failed like above). If configured correctly according to WP instructions, everything worked fine. Can you provide step by step instructions on how to reproduce this issue? What does your set up look like? http://prntscr.com/ang745 https://gist.github.com/BurlesonBrad/507038cead1e52c911cde9545e3a9afc http://prntscr.com/ang7ly Hi Brad, From what I understand about your screen shots, the litespeed-cache directory is inside your mu-plugins directory, and that is it. Is that correct? 1. In that scenario, are you able to see the LiteSpeed Cache settings in the WP Admin? 2. Is Super Cache enabled in its settings? 3. If the answer to #2 is yes, in the wp-config.php file, is there a line that says the following: define(WP_CACHE, true) If the answer to #2 is no, is that line commented out? //define(WP_CACHE, true) Pardon me while I hang my head in absolute shame and embarrassment Im known for messing around with caching tweaks and speed optimizations. So, when I saw this plugin in my mu-folder, I naturally assumed that I had put it there! Turns out, I was wrong! Somewhere in my overly crowded cranium, I never even thought that my hosting provider might have put the folder in there. Turns out, they did. Needless to say, when I deleted it? (you guessed it) my site headed south! Thanks for the Great Support! Lets mark this resolved ?and find me some memory pills! Hi Brad, Glad to hear that your issue is resolved. From your response, I am not sure if you are going to use the LiteSpeed Cache plugin, but if you do end up using it, let us know if you encounter any more problems! Were always happy to help.
LiteCache Rush: Speed comes from using less, not from doing it faster
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