Title: admin panel javascript not working
Last modified: August 15, 2020

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# admin panel javascript not working

 *  Resolved [zmahmood](https://wordpress.org/support/users/zmahmood/)
 * (@zmahmood)
 * [5 years, 10 months ago](https://wordpress.org/support/topic/admin-panel-javascript-not-working/)
 * i just updated my wordpress version after the update java script top working 
   on admin panel. website wp-admin java script is not working
    receiving the following
   error in chrome console Uncaught TypeError: Cannot read property ‘hasClass’ of
   undefined at HTMLDocument.<anonymous> (wp-auth-check.min.js?ver=5.5:2) at HTMLDocument.
   dispatch (load-scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:3) at HTMLDocument.
   r.handle (load-scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:3) at Object.trigger(
   load-scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:3) at HTMLDocument.<anonymous
   > (load-scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:3) at Function.each (load-
   scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:2) at n.fn.init.each (load-scripts.
   php?c=0&load[chunk_0]=jquery&ver=5.5:2) at n.fn.init.trigger (load-scripts.php?
   c=0&load[chunk_0]=jquery&ver=5.5:3) at Object.<anonymous> (heartbeat.min.js?ver
   =5.5:2) at i (load-scripts.php?c=0&load[chunk_0]=jquery&ver=5.5:2)
 * if any additional information please let me know
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fadmin-panel-javascript-not-working%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [JoomUnited](https://wordpress.org/support/users/joomunited/)
 * (@joomunited)
 * [5 years, 10 months ago](https://wordpress.org/support/topic/admin-panel-javascript-not-working/#post-13267115)
 * Hi,
 * How do you know that this error is related to WP Speed of Light plugin?
 * We don’t do any javascript optimization on admin side but it could be a conflict
   with some other plugin?
 * Cheers,

Viewing 1 replies (of 1 total)

The topic ‘admin panel javascript not working’ is closed to new replies.

 * ![](https://ps.w.org/wp-speed-of-light/assets/icon-256x256.png?rev=1900554)
 * [WP Speed of Light](https://wordpress.org/plugins/wp-speed-of-light/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-speed-of-light/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-speed-of-light/unresolved/)
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 * 1 reply
 * 2 participants
 * Last reply from: [JoomUnited](https://wordpress.org/support/users/joomunited/)
 * Last activity: [5 years, 10 months ago](https://wordpress.org/support/topic/admin-panel-javascript-not-working/#post-13267115)
 * Status: resolved