Title: Uncaught Error: No select2/compat/dropdownCss
Last modified: July 11, 2025

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# Uncaught Error: No select2/compat/dropdownCss

 *  Resolved [jarednolt](https://wordpress.org/support/users/jarednolt16/)
 * (@jarednolt16)
 * [11 months ago](https://wordpress.org/support/topic/uncaught-error-no-select2-compat-dropdowncss-3/)
 * Hello,
   I see this error in console when I try to edit an ACF field in field groups.
   When Ultimate Member is deactivated I can edit the fields.This is what an ACF
   Plugin Support rep said:_It looks like you’re encountering a JavaScript error
   related to the “Select2” script, which is used by ACF and many other plugins 
   to create enhanced selection boxes. The error No select2/compat/dropdownCss typically
   occurs when another plugin or your theme loads an incompatible or different version
   of the Select2 script on the same page, causing a conflict._
 * Is this a problem that could be fixed in Ultimate Member?
 * This is the complete console error:
 * Uncaught Error: No select2/compat/dropdownCss
   at callDep (select2.js?ver=2.10.2:
   225:19)at req (select2.js?ver=2.10.2:394:20)at select2.js?ver=2.10.2:200:24at
   Defaults.apply (select2.js?ver=2.10.2:4703:27)at new Options (select2.js?ver=
   2.10.2:4941:29)at new Select2 (select2.js?ver=2.10.2:5068:20)at HTMLSelectElement.(
   select2.js?ver=2.10.2:5689:26)at ce.each (load-scripts.php?c=0&load%5Bchunk_0%
   5D=jquery-core,jquery-migrate,utils,wp-dom-ready,wp-hooks&ver=6.8.1:2:3129)at
   e..each (load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,
   wp-dom-ready,wp-hooks&ver=6.8.1:2:1594)at $.fn.select2 (select2.js?ver=2.10.2:
   5686:14)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Funcaught-error-no-select2-compat-dropdowncss-3%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  [missveronica](https://wordpress.org/support/users/missveronicatv/)
 * (@missveronicatv)
 * [11 months ago](https://wordpress.org/support/topic/uncaught-error-no-select2-compat-dropdowncss-3/#post-18551614)
 * [@jarednolt16](https://wordpress.org/support/users/jarednolt16/)
 * You can try this UM JS code snippet
 * [https://docs.ultimatemember.com/article/1764-fix-dropdown-field-functionality](https://docs.ultimatemember.com/article/1764-fix-dropdown-field-functionality)
 *  Thread Starter [jarednolt](https://wordpress.org/support/users/jarednolt16/)
 * (@jarednolt16)
 * [11 months ago](https://wordpress.org/support/topic/uncaught-error-no-select2-compat-dropdowncss-3/#post-18551639)
 * [@missveronicatv](https://wordpress.org/support/users/missveronicatv/)
 * Works perfect Thanks!

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

The topic ‘Uncaught Error: No select2/compat/dropdownCss’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [jarednolt](https://wordpress.org/support/users/jarednolt16/)
 * Last activity: [11 months ago](https://wordpress.org/support/topic/uncaught-error-no-select2-compat-dropdowncss-3/#post-18551639)
 * Status: resolved