I’m having the same error since: 2018-03-23.
Everything was working fine until yesterday: 2018-03-22 during last 3 years.
Please, we need an update for this plugin asap.
Is anyone else having the same issue?
This is the error I’m getting on my end:
https://image.ibb.co/gdKWzn/image.png
As in the comment above, I’ve tried with both: debug and live Authorize.Net credentials. The orders do appears under: Woocommerce section but (in my case) as “Pending”.
Please, help!