Title: Uncaught ReferenceError: ** is not defined
Last modified: January 5, 2020

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# Uncaught ReferenceError: ** is not defined

 *  Resolved [screamson](https://wordpress.org/support/users/screamson/)
 * (@screamson)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-is-not-defined/)
 * Hello. If you can only help, please help.
 * There is your plug-in in the attached link. It works perfectly on the computer
   version. But when the mobile version is downloaded, js scripts stop working.
   
   I don’t understand what the reason is…
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Funcaught-referenceerror-is-not-defined%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Raul P.](https://wordpress.org/support/users/alignak/)
 * (@alignak)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-is-not-defined/#post-12322507)
 * Hello,
 * It could be a CSS conflict, due to lack of specificity.
    `https://www.smashingmagazine.
   com/2007/07/css-specificity-things-you-should-know/`
 * When you merge CSS, conflicts may arise.
    You can try to read our faqs on how
   to test and how to use the ignore list to exclude files. `https://wordpress.org/
   plugins/fast-velocity-minify/faq/`
 *  Thread Starter [screamson](https://wordpress.org/support/users/screamson/)
 * (@screamson)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-is-not-defined/#post-12327957)
 * Thank you very much for the answer!
    I don’t merge CSS into a single file, I 
   put it out in html. So there are shouldn’t be problems with lack of specificity.
   The problem is with js
 *  Plugin Author [Raul P.](https://wordpress.org/support/users/alignak/)
 * (@alignak)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-is-not-defined/#post-12328470)
 * Did you try following the faqs, where it says, to disable each feature one by
   one, until you determine the type or error?
 * If you know that it’s javascript based, then all you need to do is to use the
   ignore list. It may be a completely unrelated script, not necessarily the one
   triggering an error. You need to try them all until you find the one causing 
   it.
 * Also, if you are inlining all css, that can also lead to specificity issues. 
   Code that were in files, have now the same priority as inlined code, when before
   it was less.

Viewing 3 replies - 1 through 3 (of 3 total)

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

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 * 3 replies
 * 2 participants
 * Last reply from: [Raul P.](https://wordpress.org/support/users/alignak/)
 * Last activity: [6 years, 4 months ago](https://wordpress.org/support/topic/uncaught-referenceerror-is-not-defined/#post-12328470)
 * Status: resolved