Title: Customizer Not working (javascript error)
Last modified: July 27, 2021

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# Customizer Not working (javascript error)

 *  [bycode](https://wordpress.org/support/users/bycode/)
 * (@bycode)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/customizer-not-working-javascript-error-2/)
 * Hi recently I began to experience an issue while trying to edit any content on
   Theme Customizer.
 * When I click an Option to configure, like Header Options (Hero) for example, 
   the option won’t load, and in console shows the following message:
 *     ```
       Uncaught TypeError: t.onChangeSectionExpanded is not a function
           at customize-widgets
       ```
   

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## Tags

 * [javascript](https://wordpress.org/support/topic-tag/javascript/)

 * 0 replies
 * 1 participant
 * Last reply from: [bycode](https://wordpress.org/support/users/bycode/)
 * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/customizer-not-working-javascript-error-2/)
 * Status: not resolved