After more testing, I found if you customer does not create an account, the error will not pop up.
But the trans action does not show any success notification, but the order does complete in the system, and does email customer.
Still will stay stuck on last part of the checkout where the process order button is.
At first received an error for “Email is required” alert
I change my Authorize.net settings, to not require email address and I was able to stop this error, but now receive another alert called “Undefined”
Could this still be connected somehow to the Email?
I looked at my Debug logs, and it shows no email address sending to authorize.net.
Is this required went processing the order?
I also reinstalled, and this also did not fix the problem.
Same errors still occurs when going thru the checkout using Authorite.net