I am using Drupal's Commerce PayPal module (https://www.drupal.org/project/commerce_paypal) with PayPal WPS. Till today morning, everything was working fine. Now while posting to PayPal, it's redirecting the user to https://www.paypal.com/webapps/shoppingcart/error?flowlogging_id=81aaefeaa2a6&code=INTERNAL_ERROR&mf....
Here's the data I am POSTing:
$data = array(
'cmd' => '_cart',
'upload' => 1,
'business' => '<email>',
'notify_url' => 'https://test-se01.pantheonsite.io/en/commerce_paypal/ipn/paypal_wps%7Ccommerce_payment_paypal_wps',
'bn' => 'CommerceGuys_Cart_PPS',
'charset' => 'utf-8',
'no_note' => 1,
'no_shipping' => 1,
'cancel_return' => 'https://test-se01.pantheonsite.io/en/checkout/2669/payment/back/82YFEv8CHHVOvEIhCwavnYypLBkLjfo20T6o...',
'return' => 'https://test-se01.pantheonsite.io/en/checkout/2669/payment/return/82YFEv8CHHVOvEIhCwavnYypLBkLjfo20T...',
'rm' => 2,
'paymentaction' => 'sale',
'currency_code' => 'USD',
'lc' => 'US',
'invoice' => '2669-1545936338',
'amount_1' => 62.35,
'item_name_1' => 'Order 2669',
'onO_1' => 'Product count',
'osO_1' => 1,
'form_build_id' => 'form-fb_a23jbKHVl_xAcfYaw9lgPFm9jquxrihj882FwL0M',
'form_id' => 'commerce_checkout_form_payment',
);
