rtacorp

There are actually two errors generated:

PHP Deprecated:  Function Elementor\Widgets_Manager::register_widget_type is <strong>deprecated</strong> since version 3.5.0! Use register instead. /wp-includes/functions.php on line 5383

PHP Deprecated:  Hook elementor/widgets/widgets_registered is <strong>deprecated</strong> since version 3.5.0! Use elementor/widgets/register instead. in wp-includes/functions.php on line 5758

I traced the errors to /inc/elementor/class-simple-author-box-elementor-widget-activation.php

Line 44:
\Elementor\Plugin::instance()->widgets_manager->register_widget_type(new Widgets\SAB_Elementor_Widget());

Change to: 
\Elementor\Plugin::instance()->widgets_manager->register(new Widgets\SAB_Elementor_Widget());

Line 53:
add_action('elementor/widgets/widgets_registered', array($this, 'register_widgets') )

Change to:
add_action('elementor/widgets/register', array($this, 'register_widgets') )

Not knowing your code, the fixes above are educated guesses. However, the changes remove the errors.

Thank you for looking into this and looking forward to an update.

• This reply was modified 2 years, 2 months ago by rtacorp.
• This reply was modified 2 years, 2 months ago by rtacorp.

Yes.

Thank you for your reply. I used the Debug Feature to determine the cause. It was my API code having extraneous characters in the string.

Note: Groups are primarily used for user input selection. Would be nice to have a field for Tags to complement groups.