Display custom taxonomies

Hi!

This might be a dumb question, but how can I display my custom taxonomies?
In the file where Tags and Categories Portfolio are display, I have:

if($categories=get_the_term_list( get_the_ID(), 'portfolio_cat', '', ', ', '')) {
$html .= '<div class="row categories"><strong>'.esc_attr__('Categories:', 'Twoot').'</strong>'.$categories.'</div>';
}

if($tags=get_the_term_list( get_the_ID(), 'portfolio_tag', '', ', ', '')) {
$html .= '<div class="row tags"><strong>'.esc_attr__('Tags:', 'Twoot').'</strong>'.$tags.'</div>';
}

How can I add a custom taxonomie called “districts” for example?
I’ve been playing around for a while, but always getting fatal error 🙁

Thank you in advance…!

Anne-Sophie

https://wordpress.org/plugins/ultimate-cms/