Title: Uncaught ReferenceError: jQuery is not defined
Last modified: June 3, 2020

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# Uncaught ReferenceError: jQuery is not defined

 *  [Deepu Das](https://wordpress.org/support/users/deepudas/)
 * (@deepudas)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/)
 * Hello,
    When I enable Optimize JavaScript option, I keep getting the following
   error: “Uncaught ReferenceError: jQuery is not defined”
 * I have excluded js/jquery/jquery.js, but I still get this error.
 * Please see the screenshot of my settings here: [https://tinyurl.com/yasysy2q](https://tinyurl.com/yasysy2q)
 * Thank you,
    Deepu Das
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Funcaught-referenceerror-jquery-is-not-defined-26%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/#post-12934116)
 * It _should_ be excluded but it indeed is not, settings look OK too, so my money
   is on a plugin conflict of some kind?
 *  Thread Starter [Deepu Das](https://wordpress.org/support/users/deepudas/)
 * (@deepudas)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/#post-12952002)
 * I have other sites with the same plugins, but those are working well. I just 
   disabled JS optimization and it works well now. But Google PageSpeed score is
   less due to that. Any way to find the exact issue?
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/#post-12952326)
 * try disabling (and re-enabling) plugins one at a time to see if one might be 
   causing this?
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/#post-13063975)
 * any news Deepu?

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Uncaught ReferenceError: jQuery is not defined’ is closed to new replies.

 * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608)
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 * 4 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/uncaught-referenceerror-jquery-is-not-defined-26/#post-13063975)
 * Status: not resolved