WordPress jQuery UI tabs is not a function

When working with jQuery UI you get an error message:

Uncaught TypeError: jQuery(...).tabs is not a function(…)

This is because WordPress' function
wp_enqueue_script( 'jquery-ui' );
doesn't actually enqueue the tabs widget, only the core of jQuery UI.

So after that you need to add:
wp_enqueue_script( 'jquery-ui-tabs' );

See this link below for more info:

Default Scripts Included and Registered by WordPress
https://developer.wordpress.org/reference/functions/wp_enqueue_script/