// Get post category info
$category = get_the_category();

if ( !empty( $category ) ) {

    // Get last category post is in
    $last_category = end ( array_values( $category ) ); // Line 73

    // Get parent any categories and create array
    $get_cat_parents = rtrim( get_category_parents ( $last_category->term_id, true, ',' ), ',' );
    $cat_parents = explode( ',', $get_cat_parents );

    // Loop through parent categories and store in variable $cat_display
    $cat_display = '';
    foreach ( $cat_parents as $parents ) {
        $cat_display .= '<li class="item-cat">'.$parents.'</li>';
        $cat_display .= '<li class="breadcrumb-separator"> ' . $separator . ' </li>';
    }

}