#129194 Can’t use cache plugins

Landing Forums JupiterX WordPress Theme Can’t use cache plugins

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    I’d like to cache my site. I downloaded a plugin: Wp-Optimize. When I tried to turn on the cache capability, I got this note: “Could not turn on the WP_CACHE constant in wp-config.php. Check your permissions.”

    I can’t seem to find that .php file.

    Thank you for you help.

    Nodari Support Team

    Hey there

    I’m sorry, I can’t say what exactly is meaning of that message is, you can find it in the documentation of the plugin or just ask the support.
    I can share these links about which plugin to use in Jupiter X for caching and how exactly:


    Our recommended plugin for caching is Wp rocket for best performance, however other plugins can be also used,


    Thank you, I will give this a try.


    I actually cant find a free version of wp-rocket, but I tried installing a few other cache plugin options and they all give me the same error message.

    Nodari Support Team

    Hey there

    Wp-rocket is paid plugin, it does not have a free version

    Regarding your message, the plugin is trying to add “define(‘WP_CACHE’, true)” in the wp-config.php file but probably file permission is not allowing to do this, please check the permissions for wp-config.php file, check if the permissions set to 0644 So that WP-optimize can add the required constant to wp-config.php.

    You can also add this value in the file, just open it and add

    define('WP_CACHE', true)

    If you cant do this for some reason let me know and I will do this

    Best wishes


    Sorry, Iʻm not familiar with where that file is…where do I find it to edit it?

    Amir Rather Support Team

    Please go to the root folder of your website, find the wp-config.php file, and open it via a text editor. Then you can edit it, and just before the line “/* That’s all, stop editing! Happy blogging. */“, add the above line.

    Let us know the results 🙂


    Shucks, I did it and now my whole site is just white…..

    All I added was

    define(‘WP_CACHE’, true)

    I think I was supposed to put a “;” at the end of that, but I didn’t. Now I cant get back and fix that.

    Amir Rather Support Team

    Yes, my colleague seems to have missed that, apologies.

    Could you please provide the FTP details(in a private reply) I can fix it for you:

    FTP Host:
    FTP Username:
    FTP Password:
    FTP Port:

    Ask your Hosting provider if you don’t have them.

    Waiting for your reply.


    I resolved it, thank you for your help!

    Alexander Hutsol Support Team


    We are glad to know you found a solution.

    Thank you for informing.



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