Illegal Offset Type error

I am suddenly getting an error (presumably since updating to WP 4.7.1) for

Warning: Illegal offset type in /srv/users/serverpilot/apps/SITENAME/public/wp-content/plugins/frontend-publishing-pro/inc/Element_Containers/Frontend_Element_Container.php on line 433

Here is the function on line 433:

private function get_tag_choices($taxonomy, $field_settings)
{
$term_choices = $this->get_term_choices($taxonomy, $field_settings);
$tag_choices = array();
foreach ($term_choices as $term_id => $term_name) {
[433] $tag_choices[ $term_name ] = $term_name;
}
return $tag_choices;
}

Error still occurs with no other plugins active.

TIA

• This topic was modified 7 years, 10 months ago by glucas.