Title: Problem with the elementor plugin
Last modified: December 14, 2020

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# Problem with the elementor plugin

 *  Resolved [Be Dark](https://wordpress.org/support/users/b_dark/)
 * (@b_dark)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/)
 * hello when eneble your plugn and try to edit any page etc with elementor, can
   load elementor editor and i got this msg
 * > The preview could not be loaded
   >  We’re sorry, but something went wrong. Click
   > on ‘Learn more’ and follow each of the steps to quickly solve it. Click here
   > for preview debug
 * preview debug shows me this:
    ob_end_flush(): failed to send buffer of zlib output
   compression (0)
 * This start random after some update of your plugin. i don’t know from which version
   and after
    -  This topic was modified 5 years, 5 months ago by [Be Dark](https://wordpress.org/support/users/b_dark/).

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Contributor [Dōvy Paukstys](https://wordpress.org/support/users/dovyp/)
 * (@dovyp)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13788561)
 * What version of Redux are you using?
 *  Thread Starter [Be Dark](https://wordpress.org/support/users/b_dark/)
 * (@b_dark)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13789354)
 * Hello [@dovyp](https://wordpress.org/support/users/dovyp/) , your latest 4.1.24
 *  [herculesdesign](https://wordpress.org/support/users/herculesdesign/)
 * (@herculesdesign)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13794405)
 * Hi Dōvy,
    The error is caused by this: PHP Warning: Use of undefined constant
   REDUX_PLUGIN_FILE – assumed ‘REDUX_PLUGIN_FILE’ (this will throw an Error in 
   a future version of PHP) in …./wp-content/plugins/redux/redux-framework/redux-
   templates/classes/class-api.php on line 875 which causes the “Headers already
   sent” error and therefore Elementor does not work.
 * So I manually replaced REDUX_PLUGIN_FILE in the “class-api.php” file with ‘REDUX_PLUGIN_FILE’
   and it worked.
 * I hope that the above information is helpful to you and to others that have the
   same problem.
    -  This reply was modified 5 years, 5 months ago by [herculesdesign](https://wordpress.org/support/users/herculesdesign/).
 *  [mohammedeisa](https://wordpress.org/support/users/mohammedeisa/)
 * (@mohammedeisa)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13820087)
 * herculesdesign,
 * I’ve forwarded your findings to Dovy. Thanks for pointing out this.
 *  [mohammedeisa](https://wordpress.org/support/users/mohammedeisa/)
 * (@mohammedeisa)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13846311)
 * Hello,
 * Thanks for pointing out this. I’ve reported this issue to the development team
   so that they can work on it.
 * You can track the issue from this GitHub issue: [https://github.com/reduxframework/redux-framework/issues/3772](https://github.com/reduxframework/redux-framework/issues/3772)
 * Thanks.
    -  This reply was modified 5 years, 5 months ago by [mohammedeisa](https://wordpress.org/support/users/mohammedeisa/).
    -  This reply was modified 5 years, 5 months ago by [mohammedeisa](https://wordpress.org/support/users/mohammedeisa/).
 *  [herculesdesign](https://wordpress.org/support/users/herculesdesign/)
 * (@herculesdesign)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13848245)
 * Awesome 🙂
    Happy new year and best wishes for 2021 !

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Problem with the elementor plugin’ is closed to new replies.

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 * 6 replies
 * 4 participants
 * Last reply from: [herculesdesign](https://wordpress.org/support/users/herculesdesign/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/problem-with-the-elementor-plugin/#post-13848245)
 * Status: resolved