I'm having an issue with Authorize.net since Jan 18th 2019. I'm getting server error 500 when placing an order one default Magento onepage checkout, also when placing an order from the admin section; I got white page with error 500.
I'm able to see the payment/transaction on authorize.net but not on Magento (No orders)
Other symptoms surfaced:
- Some customers get a white screen page
- Browser redirection to the Cart page without any error message
- Empty error message
- Invalid email address after placing an order
- duplicate transactions
- Customer registration are not stored in Magento DB after placing order.
What is the best approach to tackle such issue?