Get woocommerce category list in fields

I want to show woocommerce category list in the plugin fields. But its not working for me. Here is my code so far

<?php
use Carbon_Fields\Container;
use Carbon_Fields\Field;

Class asd_plugin_Settings {
function __construct() {
add_action( ‘init’, array($this, ‘get_cats’) );
add_action( ‘carbon_fields_register_fields’, array($this,’crb_attach_theme_options’) );
add_action( ‘after_setup_theme’, array($this,’make_crb_load’) );
}

public function crb_attach_theme_options() {
Container::make( ‘theme_options’, __( ‘Theme Options’, ‘crb’ ) )
->add_fields( array(
Field::make( “multiselect”, “crb_available_cats”, “Category” )
->add_options( $this->get_product_cats() ),
) );
}

public function make_crb_load() {
require_once( ASD_PLUGIN_PATH . ‘/carbon-fields/vendor/autoload.php’ );
\Carbon_Fields\Carbon_Fields::boot();
}

public function get_cats() {
$categories = get_terms( ‘product_cat’, ‘orderby=name&hide_empty=0’ );
$cats = array();
if ( $categories )
foreach ( $categories as $cat )
$cats[$cat->term_id] = esc_html( $cat->name );

print_r($cats); //getting category properly
}

public function get_product_cats() {
$categories = get_terms( ‘product_cat’, ‘orderby=name&hide_empty=0’ );
$cats = array();

if ( $categories )
foreach ( $categories as $cat )
$cats[$cat->term_id] = esc_html( $cat->name );

return $cats; //not getting category. Showing error invalid taxonomy
}

}