I am also experiencing this issue on a staging version of a WordPress 5.6 site after upgrading Elementor. I had version 3.0.16 of Elementor installed and updated to 3.1.0. I cannot deploy the plugin update to the live site until this is resolved.
Here is the full error message appearing at the top of the site:
Warning: Declaration of Theplus_Column_Responsive::register_controls($element, $section_id) should be compatible with Elementor\Controls_Stack::register_controls() in /code/wp-content/plugins/theplus_elementor_addon/modules/controls/group/plus-column-width.php on line 0
The other plugins also updated at the same time are:
* Google Analytics for WordPress by MonsterInsights – Version 7.15.0 installed. Updated to 7.15.1.
* Ninja Forms – Version 3.4.33 installed. Updated to 3.4.34.
* PixelYourSite – Version 7.2.1.1 installed. Updated to 8.0.1.
* Premium Addons for Elementor – Version 4.1.8 installed. Updated to 4.2.0.
* Redirection – Version 5.0 installed. Updated to 5.0.1.
* Variation Swatches for WooCommerce – Version 1.1.5 installed. Updated to 1.1.6.
* WooCommerce – Version 4.9.1 installed. Updated to 4.9.2.
* WooCommerce Shipping & Tax – Version 1.25.5 installed. Updated to 1.25.6.
* Yoast SEO – Version 15.6.2 installed. Updated to 15.7.
And a theme:
* Astra – Version 3.0.1 installed. Updated to 3.0.2.
Hi,
Thank you for contacting us and all our apologies for the inconvenience.
Please refer to this article from our help center.
For any performance issues due to 3.1.0 update, we suggest to deactivate the experiments features. This could allow the performance back to normal.
I will be looking forward to hearing back from you.
Kind regards,
Said
Hi Said,
I turned off all experiments and cleared browser and server caches, but the error I reported in my earlier reply is still present above the main menu of the site after the 3.1.0 update.
Is there another plugin, perhaps, from the list I gave in my earlier reply, that could be in conflict with Elementor and causing this issue?
This site also uses Elementor Pro Version 3.0.8, but that presently cannot be updated due to its separate license having expired.
Hello,
Since you are using our Pro features on your website, you’ll need to open a support ticket at my.elementor.com.
WordPress.org rules state that commercial products are not supported here.
Regards,
Said