Showing results for 
Search instead for 
Did you mean: 

JsonReader Error with Magento 2 Module

I recently upgraded one of my clients to Magento 2.3.3 and they've recently switched to for payment processing. Using my test credentials on their site to verify the module worked, I had successful transactions with my sandbox account. However, when I switch to use their credentials then attempt a test, I only receive a generic Magento 2 "server error" message and an error from request.api in the Network monitor on Chrome/Firefox.


And I get this: 

{"messages":{"resultCode":"Error","message":[{"code":"E00001","text":"Error reading JToken from JsonReader. Path '', line 0, position 0."}]}}


I have yet to find anything definitive on this in terms of what it means in the context of a production account. I tried it using my local test M2 instance and received the same error so I know it's not the codebase. I verified it worked on the module and the built-in Magento provided module then tried with the customer's creds and it failed. I must assume this is an account issue but how would I verify?