Plugin try to access an empty array at makewebbetter-hubspot-for-woocommerce/inc

My env:

WP: 6.1
MWB HubSpot for WooCommerce: 1.4.5

Plugin try to access the role of an user, but in some case, role is an empty array.

<?php
// File makewebbetter-hubspot-for-woocommerce/includes/class-hubwoodatasync.php line 348
$user_data = get_user_by( 'email', $email );
$role      = $user_data->roles[0];

We should check if role is empty or not before access

<?php
$user_data = get_user_by( 'email', $email );

if (empty($user_data->roles)) {
    continue;
}

$role      = $user_data->roles[0];