FES show custom user meta on vendor order

file.php

<?php // DO NOT COPY THIS LINE

function sd_edd_fes_custom_user_meta( $payment ) {
	$user = edd_get_payment_meta_user_info( $payment->ID );
	?>
	<tr>
		<td><strong><?php _e( 'Phone', 'easy-digital-downloads' ); ?>:</strong></td>
		<td><?php echo get_user_meta( $user['id'], 'phone_number', true ); ?></td>
	</tr>
	<?php
}
add_action( 'fes_payment_receipt_after', 'sd_edd_fes_custom_user_meta' );