Title: Javascript error
Last modified: July 6, 2019

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# Javascript error

 *  Resolved [outcats85](https://wordpress.org/support/users/outcats85/)
 * (@outcats85)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-166/)
 * Since the latest update I get this error when checking the Google console:
    Uncaught
   ReferenceError: jQuery is not defined
 * Jquery is actually used in my website and I didn’t have this error before the
   update.
    How can I fix this? Thanks

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Support [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/)
 * (@wpmudev-support6)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-166/#post-11708303)
 * Hello there [@outcats85](https://wordpress.org/support/users/outcats85/),
    hope
   you’re doing well and thanks for reaching us! 🙂
 * I can’t reproduce such error in a clean state (latest WP, using TwentySeventeen
   and Hustle as the only plugin) so this seems more like a conflict with another
   plugin (maybe some optimization plugin?) or active theme.
 * In order to narrow this down, a conflict test should be made. First, create a
   recent backup in case you lose any settings during the test and have to restore
   to a previous working state.
    Then deactivate all plugins and MU-plugins apart
   from Hustle, activate a default theme like TwentySeventeen, clear all caches 
   and check again if the issue is still there. If not, it means that something 
   is conflicting, so start activating the remaining plugins and theme, one by one
   this time, checking every time for the reported issue, until you reproduce the
   issue, thus finding the conflicted combination. The following flowchart image
   can assist you during this test: [https://premium.wpmudev.org/wp-content/uploads/2015/09/Support-Process-Support-Process.gif](https://premium.wpmudev.org/wp-content/uploads/2015/09/Support-Process-Support-Process.gif)
   If this is a live website with traffic, I’d rather advise to create a staging
   environment, meaning a complete and exact copy of this installation into another
   location/folder in the same server, using a separate database, and perform the
   test in there instead without worrying about the live site.
 * Warm regards,
    Dimitris
 *  Plugin Support [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/)
 * (@wpmudev-support6)
 * [6 years, 10 months ago](https://wordpress.org/support/topic/javascript-error-166/#post-11773458)
 * Closing this topic due to recent inactivity.
    Feel free to post back any update
   or create a new topic and we’ll be glad to carry on troubleshooting. 🙂
 * Thank you,
    Dimitris

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Javascript error’ is closed to new replies.

 * ![](https://ps.w.org/wordpress-popup/assets/icon-256x256.gif?rev=3446944)
 * [Hustle - Email Marketing, Lead Generation, Optins, Popups](https://wordpress.org/plugins/wordpress-popup/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-popup/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordpress-popup/)
 * [Active Topics](https://wordpress.org/support/plugin/wordpress-popup/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-popup/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordpress-popup/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/)
 * Last activity: [6 years, 10 months ago](https://wordpress.org/support/topic/javascript-error-166/#post-11773458)
 * Status: resolved