If you’re seeing an “No Widget Found” message on your WordPress pages, especially after using shortcodes, the issue is most likely caused by the modern block-based widget editor introduced in recent versions of WordPress.

Solution 1: Use the Classic Widgets Plugin

1. Go to Plugins > Add New.

2. Search for Classic Widgets.

3. Install and activate the plugin made by WordPress Contributors.

This brings back the traditional widget system and fixes shortcode rendering on pages in many cases.

Solution 2: Add Code Manually 

If you prefer not to use a plugin, add this code to your functions.php file in your active theme:

add_filter('use_widgets_block_editor', '__return_false');

This will disable the modern block-based widgets and re-enable the classic widget editor, helping shortcodes work properly again.

Final Step 

After applying one of the fixes above:

• Go to your Widgets section again.

• Copy the new updated shortcode from the widget.

• Replace the existing shortcode in your Page content with this new one.