1.
www\includes\modules\payment\stripe.php line 119
change the code from
global $order, $db,$stripeCustomerID,$user_id,$stripe_select;
to
global $order, $db,$stripeCustomerID,$user_id,$stripe_select,$order_total_modules;

2.
www\includes\templates\YOUR_TEMPLATE\templates\tpl_checkout_confirmation_default .php
You have to find following code and delete it.

<?php
if (MODULE_ORDER_TOTAL_INSTALLED) {
$order_totals = $order_total_modules->process();
?>