Title: Javascript Error
Last modified: March 18, 2021

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# Javascript Error

 *  Resolved [Oliver Campion](https://wordpress.org/support/users/domainsupport/)
 * (@domainsupport)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/javascript-error-195/)
 * Hello,
 * We are seeing an error in the console from this plugin, please advise …
 * Many thanks,
 * Oliver
 * > [Error] Error: only one instance of babel-polyfill is allowed
   >  (anonymous function)(
   > custombox.legacy.min.js:15:671) (anonymous function) (custombox.legacy.min.
   > js:15:1088) s (custombox.legacy.min.js:15:259) e (custombox.legacy.min.js:15:
   > 422) Global Code (custombox.legacy.min.js:15:438)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fjavascript-error-195%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  [Ketan Patel](https://wordpress.org/support/users/patelketan/)
 * (@patelketan)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/javascript-error-195/#post-14204683)
 * Hello,
 * Thanks for reaching here.
 * Please refer to the below screenshot and check.
    [https://prnt.sc/10pljaa](https://prnt.sc/10pljaa)
 * Please let me know if you have anything else.
 * Thanks,
 *  Thread Starter [Oliver Campion](https://wordpress.org/support/users/domainsupport/)
 * (@domainsupport)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/javascript-error-195/#post-14205580)
 * Fantastic, thank you Ketan. That’s resolved the issue.
 * Can the javascript not be updated to test whether an instance of babel-polyfill
   already exists before attempting to create a new one?
 * That would negate the requirement for that option surely?
 * Just a thought and thank you for the swift reply.
 * Oliver
 *  [Ketan Patel](https://wordpress.org/support/users/patelketan/)
 * (@patelketan)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/javascript-error-195/#post-14205650)
 * Hello,
 * If you like our plugin please give you an important Rate and Review it here…
 * Thanks,

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

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

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## Tags

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

 * 3 replies
 * 2 participants
 * Last reply from: [Ketan Patel](https://wordpress.org/support/users/patelketan/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/javascript-error-195/#post-14205650)
 * Status: resolved