Title: Plugins and Jquery conflict
Last modified: March 9, 2017

---

# Plugins and Jquery conflict

 *  [brsastre](https://wordpress.org/support/users/brsastre/)
 * (@brsastre)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/plugins-and-jquery-conflict/)
 * Hi!
 * I have a jQuery conflict on one of the pages of my local site.
    Before creating
   this post, I updated WordPress to the latest version (4.7.3) and all the plugins
   are up to date as well. However, the problem still appears:
 *     ```
       Uncaught ReferenceError: jQuery is not defined
           at ?page_id=630:29
       ```
   
 * I first deactivated all the plugins, and the error disappear.
    I founded that
   If I activate all of my plugins, but not **Yoast SEO** the problem does not appear,
   but if I then activate Yoast SEO the problem appears.
 * And one more thing, this problem only arises on my BIO page. Unfortunately I 
   can not give you the url because the project is on my local environment.
 * I hope however, that you can shed some light on what direction the problem could
   be.
    -  This topic was modified 9 years, 3 months ago by [brsastre](https://wordpress.org/support/users/brsastre/).

Viewing 1 replies (of 1 total)

 *  [LimestoneJane](https://wordpress.org/support/users/limestonejane/)
 * (@limestonejane)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/plugins-and-jquery-conflict/#post-8892237)
 * After the update 2 days ago I had a similar problem with my plugins for Illdy
   and received this error message. The plug in was the required Iildy companion.
   As a result, I can no longer see any pages or do any work until I pay professional
   developer to log in via FTP and fix word press plug-in or disable
 * Fatal error: require_once(): Failed opening required ‘/home/inkilterservices/
   public_html/wp-content/plugins/illdy-companion/widgets/class-widget-parallax.
   php’ (include_path=’.:/opt/php54/lib/php’) in /home/inkilterservices/public_html/
   wp-content/plugins/illdy-companion/illdy-companion.php on line 70
 * Any advice on how to rectify to save me dollars would be appreciated

Viewing 1 replies (of 1 total)

The topic ‘Plugins and Jquery conflict’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [LimestoneJane](https://wordpress.org/support/users/limestonejane/)
 * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/plugins-and-jquery-conflict/#post-8892237)
 * Status: not resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics