Title: Incompatability with redis cache plugin
Last modified: August 24, 2016

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# Incompatability with redis cache plugin

 *  [Relevad](https://wordpress.org/support/users/relevad/)
 * (@relevad)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/incompatability-with-redis-cache-plugin/)
 * We installed the attachements plugin on a site of ours that is already running
   this plugin: [https://wordpress.org/plugins/redis-cache/](https://wordpress.org/plugins/redis-cache/)
   
   and the site will now 500 error with the following message in the error log: 
   Catchable fatal error: Argument 1 passed to Predis\\Pipeline\\Pipeline::__construct()
   must implement interface Predis\\ClientInterface, string given in /var/www/docs/
   commonFiles/wordpress_plugins/redis-cache/includes/predis.php on line 11509
 * We have confirmed that on a site running nothing except for the redis-cache and
   attachements, if both are active at the same time, the site becomes completely
   inaccessible with a 500 error. All pages including wp-admin are down and broken.
 * I do not know whether it is an issue with your plugin or with the redis cache
   driver predis, but we figured you’d want to know about this issue.
 * Thanks
    — Relevad
 * [https://wordpress.org/plugins/attachments/](https://wordpress.org/plugins/attachments/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Jon Christopher](https://wordpress.org/support/users/jchristopher/)
 * (@jchristopher)
 * [11 years ago](https://wordpress.org/support/topic/incompatability-with-redis-cache-plugin/#post-6107686)
 * I’m not familiar with that caching system but if someone else can offer a fix
   I’d love to see it! You can submit a pull request right on GitHub [https://github.com/jchristopher/attachments/pulls](https://github.com/jchristopher/attachments/pulls)

Viewing 1 replies (of 1 total)

The topic ‘Incompatability with redis cache plugin’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Jon Christopher](https://wordpress.org/support/users/jchristopher/)
 * Last activity: [11 years ago](https://wordpress.org/support/topic/incompatability-with-redis-cache-plugin/#post-6107686)
 * Status: not resolved