This status affects those who use the Authorize.net Accept Hosted payment method in Ecwid stores.
At the moment the Authorize.net Accept Hosted might show the ‘Authorize.net: error: null’ at the checkout (screenshot: https://d.pr/free/i/xPQLVN
We’re on this issue. We’ll keep you updated here.
Please accept our sincere apologies for this!
Note: the issue does not anyhow affect the store data (orders, products, customers, etc.). All your store data is safe and intact.