WP_Error on attribute + term insert

Hello,

I want to add a product attribute (wc_create_attribute) & assigned terms (wp_insert_term) via the functions.php.

Example:

$args      = array(
			'name'         => "Color",
			'slug'         => "color",
			'order_by'     => "menu_order",
			'has_archives' => "",
		);
		wc_create_attribute($args);
		
		$add = wp_insert_term( "Blue", 'pa_color', array( 'slug' => "blue" ) );
		print_r($add);

The wc_create_attribute works fine, but when the wp_insert_term runs it throws an error because of “Invalid taxonomy”.
When I then reload the page, it works fine because then the taxonomy is not invalid anymore.
So it seems that the wp_insert_term are executed before the create_attribute somehow. I don’t understand why it does not work in one attempt.

Maybe you can help me