Title: Cannot access Theme Customizer
Last modified: January 15, 2024

---

# Cannot access Theme Customizer

 *  Resolved [Alceo Mazzaccherini](https://wordpress.org/support/users/alceomazza/)
 * (@alceomazza)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/)
 * Hi!
   When I try to access the theme customizer it returns an unloaded blank page.
   When checking the logs only one line is printed:
 *     ```wp-block-code
       PHP Fatal error:  implode(): Cannot use output buffering in output buffering display handlers in <root-directory>/wp-content/plugins/smart-slider-3/Nextend/Framework/WordPress/AssetInjector.php on line 124
       ```
   
 * WordPress: 6.4.2
   Smart Slider 3: 3.5.1.21Astra: 4.6.3

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Support [Robert](https://wordpress.org/support/users/robertnextendweb/)
 * (@robertnextendweb)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17343767)
 * Hi [@alceomazza](https://wordpress.org/support/users/alceomazza/)!
 * This AssetInjector.php file is used to add our CSS and JS files to the source
   of the page. For this we use output buffering, for which it is important when
   it is opened and closed, otherwise an error is created. So if there is a PHP 
   error somewhere, that closes the output buffer sooner then expected.
 * If there is an error already on the page, our code could also result in this.
   
   You should use the Health Check & Troubleshooting plugin, as you see here:[https://smartslider.helpscoutdocs.com/article/2006-how-to-use-health-check-troubleshooting-plugin](https://smartslider.helpscoutdocs.com/article/2006-how-to-use-health-check-troubleshooting-plugin)
   And check if you still see the same issue with only Smart Slider enabled with
   your theme, and no other plugins.If you do, then please contact us here:[https://smartslider3.com/help/](https://smartslider3.com/help/)
   and we’ll give you further instructions.
 *  Thread Starter [Alceo Mazzaccherini](https://wordpress.org/support/users/alceomazza/)
 * (@alceomazza)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17344101)
 * It seems it conflicts with a plugin developed internally by our company.
   Although
   when only Smart Slider 3 is deactivated no errors or warning are printed inside
   the log, so we cannot determine what is causing the conflict.
 * We’ll contact you through [https://smartslider3.com/help/](https://smartslider3.com/help/)
   
   Thank you for the quick response
 *  [ericlma](https://wordpress.org/support/users/ericlma/)
 * (@ericlma)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17784781)
 * [@alceomazza](https://wordpress.org/support/users/alceomazza/) and [@robertnextendweb](https://wordpress.org/support/users/robertnextendweb/)
   I have the exact same issue. Can you let me know how the issue above was resolved?
 *  [ericlma](https://wordpress.org/support/users/ericlma/)
 * (@ericlma)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17784786)
 * BTW, my setup is
 * WordPress: 6.5.3
   Smart Slider 3: 3.5.1.23Astra: 4.6.15
 *  [ericlma](https://wordpress.org/support/users/ericlma/)
 * (@ericlma)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17784832)
 * OK, I solved the problem by adding
 * define(‘WP_MEMORY_LIMIT’, ‘1024M’);
 * define(‘WP_MAX_MEMORY_LIMIT’, ‘1024M’);

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Cannot access Theme Customizer’ is closed to new replies.

 * ![](https://ps.w.org/smart-slider-3/assets/icon.svg?rev=2307688)
 * [Smart Slider 3](https://wordpress.org/plugins/smart-slider-3/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/smart-slider-3/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/smart-slider-3/)
 * [Active Topics](https://wordpress.org/support/plugin/smart-slider-3/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/smart-slider-3/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/smart-slider-3/reviews/)

## Tags

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

 * 5 replies
 * 3 participants
 * Last reply from: [ericlma](https://wordpress.org/support/users/ericlma/)
 * Last activity: [1 year, 11 months ago](https://wordpress.org/support/topic/cannot-access-theme-customizer/#post-17784832)
 * Status: resolved