Fixing ACF Pro so the dreded "isArrayLike empty obj error" is avoided

input.js

acf.add_filter('validation_complete', function( json, $form ){

		// Return early if there are no errors.
		// This will avoid the dreded "isArrayLike empty obj error"
		// https://github.com/jquery/jquery/issues/2242
		if ( 0 === json.errors ) {
			return json;
		}

		// show field error messages
		$.each( json.errors, function( k, item ){
		
			var $input = $form.find('[name="' + item.input + '"]').first(),
				$field = acf.get_field_wrap( $input ),
				$tab = $field.prevAll('.acf-field[data-type="tab"]:first');
			
			
			// does tab group exist?
			if( ! $tab.exists() )
			{
				return;
			}

			
			// is this field hidden
			if( $field.hasClass('hidden-by-tab') )
			{
				// show this tab
				$tab.siblings('.acf-tab-wrap').find('a[data-key="' + acf.get_data($tab, 'key') + '"]').trigger('click');
				
				// end loop
				return false;
			}
			
			
			// field is within a tab group, and the tab is already showing
			// end loop
			return false;
			
		});
		
		
		// return
		return json;
				
	});