node title preprocess_views_view_field(); I want to save the node title in a variable using: themename_preprocess_views_view_field(), becuase I want to print a the node title above the field.

But when I try to save the title with:

themename_preprocess_views_view_field() {
$variables['node_title'] = $variables['field']-&gt;original_value -&gt;    string;
}


I get Error: Cannot access protected property Drupal\Core\Render\Markup::$string in themename_preprocess_views_view_field() (line 123 of themes/custom/themename/themename.theme).

how can I save this variable so I can print it in the views-view-field.html.twig file?
Solution: The way to do this is to add an address Field in the View as Content datasource: address in the Admin GUI.

And select Use entity field rendering.

Under REWRITE RESULTS
 Select: Override the output of this field with custom text

And in the textbox I added in my case: 

{{ title }}
{{ field_address }}